diff --git a/API/hermes/SynthTrace.cpp.1 b/API/hermes/SynthTrace.cpp
index da8d722..496a013 100644
--- a/API/hermes/SynthTrace.cpp.1
+++ b/API/hermes/SynthTrace.cpp
@@ -84,6 +84,7 @@ llvh::StringRef recordTypeToString(RecordType type) {
     SYNTH_TRACE_RECORD_TYPES(CASE)
 #undef CASE
   }
+  return "";
 }
 
 } // namespace