diff --git a/library/error.c b/library/error.c
index d17338a..3f4bc93 100644
--- a/library/error.c
+++ b/library/error.c
@@ -160,7 +160,7 @@
 
 #include <string.h>
 
-#if defined _MSC_VER && !defined  snprintf
+#if defined(_MSC_VER) && !defined  snprintf
 #define  snprintf  _snprintf
 #endif