diff --git a/runtest.c b/runtest.c
index ff78f02..dd74c88 100644
--- a/runtest.c
+++ b/runtest.c
@@ -194,6 +194,11 @@
              free(pglob->gl_pathv[i]);
     }
 }
+
+#if !defined(__MINGW32__)
+#define vsnprintf _vsnprintf
+#define snprintf _snprintf
+#endif
 #else
 #include <glob.h>
 #endif