diff --git a/rpitx.py b/rpitx.py
index 2d509b3b..678f30b1 100644
--- a/rpitx.py
+++ b/rpitx.py
@@ -53,7 +53,7 @@ if __name__ == "__main__":
 
 	if (len(sys.argv)) > 1:
 #        	print("There are arguments!")
-        	if (('d' == sys.argv[1] or ('-d' in sys.argv[1])):
+        	if (('d' == sys.argv[1]) or ('-d' in sys.argv[1])):
 			debug_mode = 1
 			
 	print(transmit)