diff --git a/.gitignore b/.gitignore
index e3cfaeae..c8c54aef 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,5 @@
 /msvc/Debug
 /msvc/*.suo
 /msvc/*.user
+/msvc/x64
+/msvc/.vs/msvc-2010/v14/*.suo
diff --git a/mednafen/mednafen-types.h b/mednafen/mednafen-types.h
index 10b9fbc6..bbb9ed92 100644
--- a/mednafen/mednafen-types.h
+++ b/mednafen/mednafen-types.h
@@ -33,7 +33,6 @@ typedef uint64_t uint64;
   #define MDFN_NOWARN_UNUSED __attribute__((unused))
 
 #elif defined(_MSC_VER)
-#define roundf(in) (in >= 0.0f ? floorf(in + 0.5f) : ceilf(in - 0.5f))
   #define INLINE inline
   #define NO_INLINE
 #define MDFN_LIKELY(n) ((n) != 0)