diff --git a/theXORitself.py b/theXORitself.py
index 6d5a997..45e2d79 100644
--- a/theXORitself.py
+++ b/theXORitself.py
@@ -23,7 +23,7 @@ def main(argv):
         elif opt in ("-3","--comp3"):
             comp3 = str(arg)
     
-    if len(comp1) != len(comp2) or len(comp1) != len(comp3):
+    if (len(comp1) != len(comp2)) or (len(comp1) != len(comp3)):
         print("All components should be of the same length")
         sys.exit(2)