diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index fc3f98aaf..efcc89bab 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -220,6 +220,7 @@ AString cClientHandle::FormatMessageType(bool ShouldAppendChatPrefixes, eMessage
 		}
 	}
 	ASSERT(!"Unhandled chat prefix type!");
+	return "";
 }