diff --git a/src/main/java/org/qortal/data/group/GroupData.java b/src/main/java/org/qortal/data/group/GroupData.java
index 170f678b..7b19fcd2 100644
--- a/src/main/java/org/qortal/data/group/GroupData.java
+++ b/src/main/java/org/qortal/data/group/GroupData.java
@@ -35,6 +35,9 @@ public class GroupData {
 	)
 	private int creationGroupId;
 
+	// We abuse this class for API purposes by adding this unrelated field. Not always present.
+	private Boolean isAdmin;
+
 	// Constructors
 
 	// necessary for JAX-RS serialization
@@ -140,4 +143,14 @@ public class GroupData {
 		return this.creationGroupId;
 	}
 
+	// This is for API call GET /groups/member/{address}
+
+	public Boolean isAdmin() {
+		return this.isAdmin;
+	}
+
+	public void setIsAdmin(boolean isAdmin) {
+		this.isAdmin = isAdmin;
+	}
+
 }
diff --git a/src/main/java/org/qortal/repository/hsqldb/HSQLDBGroupRepository.java b/src/main/java/org/qortal/repository/hsqldb/HSQLDBGroupRepository.java
index 53fcfe0e..257c61c9 100644
--- a/src/main/java/org/qortal/repository/hsqldb/HSQLDBGroupRepository.java
+++ b/src/main/java/org/qortal/repository/hsqldb/HSQLDBGroupRepository.java
@@ -206,8 +206,10 @@ public class HSQLDBGroupRepository implements GroupRepository {
 	public List<GroupData> getGroupsWithMember(String member, Integer limit, Integer offset, Boolean reverse) throws DataException {
 		StringBuilder sql = new StringBuilder(512);
 		sql.append("SELECT group_id, owner, group_name, description, created, updated, reference, is_open, "
-				+ "approval_threshold, min_block_delay, max_block_delay, creation_group_id FROM Groups "
-				+ "JOIN GroupMembers USING (group_id) WHERE address = ? ORDER BY group_name");
+				+ "approval_threshold, min_block_delay, max_block_delay, creation_group_id, admin FROM Groups "
+				+ "JOIN GroupMembers USING (group_id) "
+				+ "LEFT OUTER JOIN GroupAdmins ON GroupAdmins.group_id = GroupMembers.group_id AND GroupAdmins.admin = GroupMembers.address "
+				+ "WHERE address = ? ORDER BY group_name");
 		if (reverse != null && reverse)
 			sql.append(" DESC");
 
@@ -239,8 +241,13 @@ public class HSQLDBGroupRepository implements GroupRepository {
 				int maxBlockDelay = resultSet.getInt(11);
 
 				int creationGroupId = resultSet.getInt(12);
+				resultSet.getString(13);
+				boolean isAdmin = !resultSet.wasNull();
 
-				groups.add(new GroupData(groupId, owner, groupName, description, created, updated, isOpen, approvalThreshold, minBlockDelay, maxBlockDelay, reference, creationGroupId));
+				GroupData groupData = new GroupData(groupId, owner, groupName, description, created, updated, isOpen, approvalThreshold, minBlockDelay, maxBlockDelay, reference, creationGroupId);
+				groupData.setIsAdmin(isAdmin);
+
+				groups.add(groupData);
 			} while (resultSet.next());
 
 			return groups;