diff --git a/stepmania/src/archutils/Win32/mapconv.cpp b/stepmania/src/archutils/Win32/mapconv.cpp
index 29a4a519c5..0555a340c6 100644
--- a/stepmania/src/archutils/Win32/mapconv.cpp
+++ b/stepmania/src/archutils/Win32/mapconv.cpp
@@ -9,7 +9,7 @@
 #include <ctype.h>
 
 #define MAX_CNAMBUF		(0x20000)
-#define MAX_FNAMBUF		(0x200000)
+#define MAX_FNAMBUF		(0x400000)
 #define MAX_SEGMENTS	(64)
 #define MAX_GROUPS		(64)
 
diff --git a/stepmania/src/archutils/Win32/mapconv.exe b/stepmania/src/archutils/Win32/mapconv.exe
index d00a3f8915..05cf0f824a 100644
Binary files a/stepmania/src/archutils/Win32/mapconv.exe and b/stepmania/src/archutils/Win32/mapconv.exe differ