diff --git a/memmap.cpp b/memmap.cpp
index 01777ac7..259c416c 100644
--- a/memmap.cpp
+++ b/memmap.cpp
@@ -4261,6 +4261,13 @@ void CMemory::CheckForAnyPatch (const char *rom_filename, bool8 header, int32 &r
 	_makepath(fname, drive, dir, name, "msu1");
 	unzFile msu1file = unzOpen(fname);
 
+	if (!msu1file)
+	{
+		_snprintf(fname, sizeof(fname), "%s" SLASH_STR "%s%s",
+			S9xGetDirectory(IPS_DIR), name, ".msu1");
+		msu1file = unzOpen(fname);
+	}
+
 	if (msu1file)
 	{
 		int	port = unzFindExtension(msu1file, "bps");
diff --git a/msu1.cpp b/msu1.cpp
index a13e45bb..1f042110 100644
--- a/msu1.cpp
+++ b/msu1.cpp
@@ -259,6 +259,12 @@ STREAM S9xMSU1OpenFile(char *msu_ext)
 			unzFile = unzOpen(zip_filename);
 		}
 
+		if (!unzFile)
+		{
+			zip_filename = S9xGetFilename(".msu1", IPS_DIR);
+			unzFile = unzOpen(zip_filename);
+		}
+
         if (unzFile)
         {
             int	port = unzFindExtension(unzFile, msu_ext);