diff --git a/src/libCom/tsDefs/tsDefs.h b/src/libCom/tsDefs/tsDefs.h
index 586147c67..e0f6f40d3 100644
--- a/src/libCom/tsDefs/tsDefs.h
+++ b/src/libCom/tsDefs/tsDefs.h
@@ -38,5 +38,6 @@ epicsShareFunc long epicsShareAPI tsLocalTime(TS_STAMP *pStamp);
 #ifdef __cplusplus
 }
 #endif
+#endif /* tsDefsh  */