diff --git a/Utilities/cmcurl/mprintf.c b/Utilities/cmcurl/mprintf.c
index 12d12084d..2bb973254 100644
--- a/Utilities/cmcurl/mprintf.c
+++ b/Utilities/cmcurl/mprintf.c
@@ -1134,7 +1134,7 @@ int curl_msprintf(char *buffer, const char *format, ...)
   return retcode;
 }
 
-#if !defined( WIN32) || defined(__UCLIBC__) /* not needed on win32 */
+#if !(defined( WIN32) || defined(__UCLIBC__)) /* not needed on win32 */
 extern int fputc(int, FILE *);
 #endif