diff --git a/src/org/linphone/LinphoneContact.java b/src/org/linphone/LinphoneContact.java
index a2eb78bc3..ddf614d94 100644
--- a/src/org/linphone/LinphoneContact.java
+++ b/src/org/linphone/LinphoneContact.java
@@ -87,11 +87,11 @@ public class LinphoneContact implements Serializable, Comparable<LinphoneContact
 	
 	@Override
 	public int compareTo(LinphoneContact contact) {
-		String fullName = getFullName();
-		String contactFullName = contact.getFullName();
-		String firstLetter = fullName == null || fullName.isEmpty() ? "" : fullName.substring(0, 1).toUpperCase(Locale.getDefault());
-		String contactfirstLetter = contactFullName == null || contactFullName.isEmpty() ? "" : contactFullName.substring(0, 1).toUpperCase(Locale.getDefault());
-		return firstLetter.compareTo(contactfirstLetter);
+		String fullName = getFullName() != null ? getFullName() : "";
+		String contactFullName = contact.getFullName() != null ? contact.getFullName() : "";
+		/*String firstLetter = fullName == null || fullName.isEmpty() ? "" : fullName.substring(0, 1).toUpperCase(Locale.getDefault());
+		String contactfirstLetter = contactFullName == null || contactFullName.isEmpty() ? "" : contactFullName.substring(0, 1).toUpperCase(Locale.getDefault());*/
+		return fullName.compareTo(contactFullName);
 	}
 
 	public void setFullName(String name) {