diff --git a/compiler/globals.py b/compiler/globals.py
index f5710b63..1b272b98 100644
--- a/compiler/globals.py
+++ b/compiler/globals.py
@@ -613,8 +613,8 @@ def report_status():
         # If write size is more than half of the word size,
         # then it doesn't need a write mask. It would be writing
         # the whole word.
-        if (OPTS.write_size < 1 or OPTS.write_size > OPTS.word_size/2):
-            debug.error("Write size needs to be between 1 bit and {0} bits.".format(OPTS.word_size/2))
+        if (OPTS.write_size < 1 or OPTS.write_size > OPTS.word_size / 2):
+            debug.error("Write size needs to be between 1 bit and {0} bits.".format(int(OPTS.word_size / 2)))
 
     if not OPTS.tech_name:
         debug.error("Tech name must be specified in config file.")