diff --git a/stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.cpp b/stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.cpp
index 73c005921e..a490ec41a4 100644
--- a/stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.cpp
+++ b/stepmania/src/arch/MemoryCard/MemoryCardDriver_Linux.cpp
@@ -215,7 +215,10 @@ bool MemoryCardDriver_Linux::MountAndTestWrite( UsbStorageDevice* pDevice )
 
 	// Try to write a file.
 	// TODO: Can we use RageFile for this?
-	const CString sFile = "temp";
+	CString sFile = usbd.sOsMountDir;
+	if( sFile[sFile.length()-1 != '/' )
+		sFile += '/';
+	sFile += "temp";
 	int fd = open( sFile, O_WRONLY|O_CREAT|O_TRUNC );
 	if( fd == -1 )
 		return false;