diff --git a/cpu.sh b/cpu.sh
index 85360d2..9536847 100755
--- a/cpu.sh
+++ b/cpu.sh
@@ -28,7 +28,7 @@ while getopts l:t:g:dh arg; do
 	l)	LOAD=${OPTARG};;
 	t)	TTL=${OPTARG};;
 	g)	GRACE=${OPTARG};;
-	d)	{DEBUG}=1;;
+	d)	DEBUG=1;;
 	h)	usage;;
 	*)	usage;;
 	esac