1 files changed, 1 insertions, 1 deletions
diff --git a/utils.h b/utils.h
index 7e277c8..e773dea 100644
--- a/utils.h
+++ b/utils.h
@@ -237,7 +237,7 @@ uInformation(const char * /* s */ , ...
     );
 #endif
 #ifdef HAVE_STRDUP
-#define	uStringDup(s1)		(strdup(s1))
+#define	uStringDup(s1)		((s1) ? strdup(s1) : NULL)
 #else
      extern char *uStringDup(const char *       /* s1 */
     );