diff --git a/src/doomtype.h b/src/doomtype.h
index 6bc563527..ff4199775 100644
--- a/src/doomtype.h
+++ b/src/doomtype.h
@@ -100,9 +100,9 @@ typedef long ssize_t;
 
 #if defined (_MSC_VER) || defined (__OS2__)
 	// Microsoft VisualC++
-#ifdef _MSC_VER
+#if (_MSC_VER <= 1800) // MSVC 2013 and back
 	#define snprintf                _snprintf
-#if (_MSC_VER <= 1200)
+#if (_MSC_VER <= 1200) // MSVC 2012 and back
 	#define vsnprintf               _vsnprintf
 #endif
 #endif