diff --git a/src/main/java/org/qortal/transaction/BuyNameTransaction.java b/src/main/java/org/qortal/transaction/BuyNameTransaction.java
index 3b58842d..ad3e0c8d 100644
--- a/src/main/java/org/qortal/transaction/BuyNameTransaction.java
+++ b/src/main/java/org/qortal/transaction/BuyNameTransaction.java
@@ -13,6 +13,7 @@ import org.qortal.data.transaction.TransactionData;
 import org.qortal.naming.Name;
 import org.qortal.repository.DataException;
 import org.qortal.repository.Repository;
+import org.qortal.utils.Unicode;
 
 import com.google.common.base.Utf8;
 
@@ -58,9 +59,9 @@ public class BuyNameTransaction extends Transaction {
 		if (nameLength < Name.MIN_NAME_SIZE || nameLength > Name.MAX_NAME_SIZE)
 			return ValidationResult.INVALID_NAME_LENGTH;
 
-		// Check name is lowercase
-		if (!name.equals(name.toLowerCase()))
-			return ValidationResult.NAME_NOT_LOWER_CASE;
+		// Check name is in normalized form (no leading/trailing whitespace, etc.)
+		if (!name.equals(Unicode.normalize(name)))
+			return ValidationResult.NAME_NOT_NORMALIZED;
 
 		NameData nameData = this.repository.getNameRepository().fromName(name);
 
diff --git a/src/main/java/org/qortal/transaction/CancelSellNameTransaction.java b/src/main/java/org/qortal/transaction/CancelSellNameTransaction.java
index da81e4ea..f241db47 100644
--- a/src/main/java/org/qortal/transaction/CancelSellNameTransaction.java
+++ b/src/main/java/org/qortal/transaction/CancelSellNameTransaction.java
@@ -11,6 +11,7 @@ import org.qortal.data.transaction.TransactionData;
 import org.qortal.naming.Name;
 import org.qortal.repository.DataException;
 import org.qortal.repository.Repository;
+import org.qortal.utils.Unicode;
 
 import com.google.common.base.Utf8;
 
@@ -51,9 +52,9 @@ public class CancelSellNameTransaction extends Transaction {
 		if (nameLength < 1 || nameLength > Name.MAX_NAME_SIZE)
 			return ValidationResult.INVALID_NAME_LENGTH;
 
-		// Check name is lowercase
-		if (!name.equals(name.toLowerCase()))
-			return ValidationResult.NAME_NOT_LOWER_CASE;
+		// Check name is in normalized form (no leading/trailing whitespace, etc.)
+		if (!name.equals(Unicode.normalize(name)))
+			return ValidationResult.NAME_NOT_NORMALIZED;
 
 		NameData nameData = this.repository.getNameRepository().fromName(name);
 
diff --git a/src/main/java/org/qortal/transaction/CreateGroupTransaction.java b/src/main/java/org/qortal/transaction/CreateGroupTransaction.java
index 63725cfb..7ed61684 100644
--- a/src/main/java/org/qortal/transaction/CreateGroupTransaction.java
+++ b/src/main/java/org/qortal/transaction/CreateGroupTransaction.java
@@ -72,7 +72,7 @@ public class CreateGroupTransaction extends Transaction {
 
 		// Check name is in normalized form (no leading/trailing whitespace, etc.)
 		if (!groupName.equals(Unicode.normalize(groupName)))
-			return ValidationResult.NAME_NOT_LOWER_CASE;
+			return ValidationResult.NAME_NOT_NORMALIZED;
 
 		Account creator = getCreator();
 
diff --git a/src/main/java/org/qortal/transaction/CreatePollTransaction.java b/src/main/java/org/qortal/transaction/CreatePollTransaction.java
index 07fddce9..4c4b3a0a 100644
--- a/src/main/java/org/qortal/transaction/CreatePollTransaction.java
+++ b/src/main/java/org/qortal/transaction/CreatePollTransaction.java
@@ -12,6 +12,7 @@ import org.qortal.data.transaction.TransactionData;
 import org.qortal.data.voting.PollOptionData;
 import org.qortal.repository.DataException;
 import org.qortal.repository.Repository;
+import org.qortal.utils.Unicode;
 import org.qortal.voting.Poll;
 
 import com.google.common.base.Utf8;
@@ -51,8 +52,9 @@ public class CreatePollTransaction extends Transaction {
 			return ValidationResult.INVALID_ADDRESS;
 
 		// Check name size bounds
-		int pollNameLength = Utf8.encodedLength(this.createPollTransactionData.getPollName());
-		if (pollNameLength < 1 || pollNameLength > Poll.MAX_NAME_SIZE)
+		String pollName = this.createPollTransactionData.getPollName();
+		int pollNameLength = Utf8.encodedLength(pollName);
+		if (pollNameLength < Poll.MIN_NAME_SIZE || pollNameLength > Poll.MAX_NAME_SIZE)
 			return ValidationResult.INVALID_NAME_LENGTH;
 
 		// Check description size bounds
@@ -60,9 +62,9 @@ public class CreatePollTransaction extends Transaction {
 		if (pollDescriptionLength < 1 || pollDescriptionLength > Poll.MAX_DESCRIPTION_SIZE)
 			return ValidationResult.INVALID_DESCRIPTION_LENGTH;
 
-		// Check poll name is lowercase
-		if (!this.createPollTransactionData.getPollName().equals(this.createPollTransactionData.getPollName().toLowerCase()))
-			return ValidationResult.NAME_NOT_LOWER_CASE;
+		// Check name is in normalized form (no leading/trailing whitespace, etc.)
+		if (!pollName.equals(Unicode.normalize(pollName)))
+			return ValidationResult.NAME_NOT_NORMALIZED;
 
 		// Check number of options
 		List<PollOptionData> pollOptions = this.createPollTransactionData.getPollOptions();
diff --git a/src/main/java/org/qortal/transaction/IssueAssetTransaction.java b/src/main/java/org/qortal/transaction/IssueAssetTransaction.java
index a562c7a5..e9422dcd 100644
--- a/src/main/java/org/qortal/transaction/IssueAssetTransaction.java
+++ b/src/main/java/org/qortal/transaction/IssueAssetTransaction.java
@@ -53,7 +53,7 @@ public class IssueAssetTransaction extends Transaction {
 
 		// Check name is in normalized form (no leading/trailing whitespace, etc.)
 		if (!assetName.equals(Unicode.normalize(assetName)))
-			return ValidationResult.NAME_NOT_LOWER_CASE;
+			return ValidationResult.NAME_NOT_NORMALIZED;
 
 		// Check description size bounds
 		int assetDescriptionlength = Utf8.encodedLength(this.issueAssetTransactionData.getDescription());
diff --git a/src/main/java/org/qortal/transaction/RegisterNameTransaction.java b/src/main/java/org/qortal/transaction/RegisterNameTransaction.java
index d02631c0..555fcc60 100644
--- a/src/main/java/org/qortal/transaction/RegisterNameTransaction.java
+++ b/src/main/java/org/qortal/transaction/RegisterNameTransaction.java
@@ -60,7 +60,7 @@ public class RegisterNameTransaction extends Transaction {
 
 		// Check name is in normalized form (no leading/trailing whitespace, etc.)
 		if (!name.equals(Unicode.normalize(name)))
-			return ValidationResult.NAME_NOT_LOWER_CASE;
+			return ValidationResult.NAME_NOT_NORMALIZED;
 
 		// Check registrant has enough funds
 		if (registrant.getConfirmedBalance(Asset.QORT) < this.registerNameTransactionData.getFee())
diff --git a/src/main/java/org/qortal/transaction/SellNameTransaction.java b/src/main/java/org/qortal/transaction/SellNameTransaction.java
index 5b77097f..81bd9ff7 100644
--- a/src/main/java/org/qortal/transaction/SellNameTransaction.java
+++ b/src/main/java/org/qortal/transaction/SellNameTransaction.java
@@ -11,6 +11,7 @@ import org.qortal.data.transaction.TransactionData;
 import org.qortal.naming.Name;
 import org.qortal.repository.DataException;
 import org.qortal.repository.Repository;
+import org.qortal.utils.Unicode;
 
 import com.google.common.base.Utf8;
 
@@ -54,9 +55,9 @@ public class SellNameTransaction extends Transaction {
 		if (nameLength < 1 || nameLength > Name.MAX_NAME_SIZE)
 			return ValidationResult.INVALID_NAME_LENGTH;
 
-		// Check name is lowercase
-		if (!name.equals(name.toLowerCase()))
-			return ValidationResult.NAME_NOT_LOWER_CASE;
+		// Check name is in normalized form (no leading/trailing whitespace, etc.)
+		if (!name.equals(Unicode.normalize(name)))
+			return ValidationResult.NAME_NOT_NORMALIZED;
 
 		NameData nameData = this.repository.getNameRepository().fromName(name);
 
diff --git a/src/main/java/org/qortal/transaction/Transaction.java b/src/main/java/org/qortal/transaction/Transaction.java
index fe10dcd9..761d9064 100644
--- a/src/main/java/org/qortal/transaction/Transaction.java
+++ b/src/main/java/org/qortal/transaction/Transaction.java
@@ -169,7 +169,7 @@ public abstract class Transaction {
 		BUYER_ALREADY_OWNER(14),
 		INVALID_AMOUNT(15),
 		INVALID_SELLER(16),
-		NAME_NOT_LOWER_CASE(17),
+		NAME_NOT_NORMALIZED(17),
 		INVALID_DESCRIPTION_LENGTH(18),
 		INVALID_OPTIONS_COUNT(19),
 		INVALID_OPTION_LENGTH(20),
diff --git a/src/main/java/org/qortal/transaction/UpdateNameTransaction.java b/src/main/java/org/qortal/transaction/UpdateNameTransaction.java
index 13c5f0fb..fdcba164 100644
--- a/src/main/java/org/qortal/transaction/UpdateNameTransaction.java
+++ b/src/main/java/org/qortal/transaction/UpdateNameTransaction.java
@@ -54,7 +54,7 @@ public class UpdateNameTransaction extends Transaction {
 
 		// Check name is in normalized form (no leading/trailing whitespace, etc.)
 		if (!name.equals(Unicode.normalize(name)))
-			return ValidationResult.NAME_NOT_LOWER_CASE;
+			return ValidationResult.NAME_NOT_NORMALIZED;
 
 		NameData nameData = this.repository.getNameRepository().fromName(name);
 
@@ -76,7 +76,7 @@ public class UpdateNameTransaction extends Transaction {
 
 			// Check new name is in normalized form (no leading/trailing whitespace, etc.)
 			if (!newName.equals(Unicode.normalize(newName)))
-				return ValidationResult.NAME_NOT_LOWER_CASE;
+				return ValidationResult.NAME_NOT_NORMALIZED;
 		}
 
 		// Check new data size bounds (0 length means don't update data)
diff --git a/src/main/java/org/qortal/transaction/VoteOnPollTransaction.java b/src/main/java/org/qortal/transaction/VoteOnPollTransaction.java
index 3d781caf..35447aa6 100644
--- a/src/main/java/org/qortal/transaction/VoteOnPollTransaction.java
+++ b/src/main/java/org/qortal/transaction/VoteOnPollTransaction.java
@@ -15,6 +15,7 @@ import org.qortal.data.voting.VoteOnPollData;
 import org.qortal.repository.DataException;
 import org.qortal.repository.Repository;
 import org.qortal.repository.VotingRepository;
+import org.qortal.utils.Unicode;
 import org.qortal.voting.Poll;
 
 import com.google.common.base.Utf8;
@@ -58,9 +59,9 @@ public class VoteOnPollTransaction extends Transaction {
 		if (pollNameLength < 1 || pollNameLength > Poll.MAX_NAME_SIZE)
 			return ValidationResult.INVALID_NAME_LENGTH;
 
-		// Check poll name is lowercase
-		if (!pollName.equals(pollName.toLowerCase()))
-			return ValidationResult.NAME_NOT_LOWER_CASE;
+		// Check name is in normalized form (no leading/trailing whitespace, etc.)
+		if (!pollName.equals(Unicode.normalize(pollName)))
+			return ValidationResult.NAME_NOT_NORMALIZED;
 
 		VotingRepository votingRepository = this.repository.getVotingRepository();
 
diff --git a/src/main/java/org/qortal/voting/Poll.java b/src/main/java/org/qortal/voting/Poll.java
index 8792f379..0db71788 100644
--- a/src/main/java/org/qortal/voting/Poll.java
+++ b/src/main/java/org/qortal/voting/Poll.java
@@ -12,6 +12,7 @@ public class Poll {
 	private PollData pollData;
 
 	// Other useful constants
+	public static final int MIN_NAME_SIZE = 3;
 	public static final int MAX_NAME_SIZE = 400;
 	public static final int MAX_DESCRIPTION_SIZE = 4000;
 	public static final int MAX_OPTIONS = 100;