diff --git a/bench/utils/bin2mem.py b/bench/utils/bin2mem.py
index a8700696897d9b23c1a6f5b7c4dd542876a7b060..0d9fa1677a778c1d272f2ba55a9e703f4ac03986 100755
--- a/bench/utils/bin2mem.py
+++ b/bench/utils/bin2mem.py
@@ -40,8 +40,7 @@ if(len(sys.argv) < 2):
     print "Usage bin2mem.py FILENAME"
     quit()
 
-filename = sys.argv[1].strip('.bin') + ".mem"
-
+filename = sys.argv[2]
 mem_file  = open(filename,    'wb')
 
 with open(sys.argv[1], "rb") as f: