diff --git a/litedram/gen-src/sdram_init/bin2hex.py b/litedram/gen-src/sdram_init/bin2hex.py
index af278bc..b53b2c9 100755
--- a/litedram/gen-src/sdram_init/bin2hex.py
+++ b/litedram/gen-src/sdram_init/bin2hex.py
@@ -7,11 +7,8 @@ import struct
 with open(sys.argv[1], "rb") as f:
         while True:
             word = f.read(8)
-            if len(word) == 8:
-                print("%016x" % struct.unpack('Q', word));
-            elif len(word) == 4:
-                print("00000000%08x" % struct.unpack('I', word));
-            elif len(word) == 0:
+            if len(word) == 0:
                 exit(0);
-            else:
-                raise Exception("Bad length")
+            if len(word) != 8:
+                word = word + bytes(8 - len(word))
+            print("%016x" % struct.unpack('Q', word));