diff --git a/sds.h b/sds.h
index 1bdb60d..6e433fe 100644
--- a/sds.h
+++ b/sds.h
@@ -272,3 +272,8 @@ int sdsTest(int argc, char *argv[]);
 #endif
 
 #endif
+
+/* GCC:  Incorrect warning about empty translation units 
+ * when using pre-compiled headers,
+ * (See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64502). */
+typedef int sdsvoid;