diff --git a/scripts/check_format.sh b/scripts/check_format.sh
index a061d2799..21a34e2c8 100755
--- a/scripts/check_format.sh
+++ b/scripts/check_format.sh
@@ -110,12 +110,10 @@ else
 fi
 rm -f scripts/posix.log
 
-if hash pep8 2>/dev/null; then
-	PEP8=pep8
-fi
-
 if hash pycodestyle 2>/dev/null; then
 	PEP8=pycodestyle
+elif hash pep8 2>/dev/null; then
+	PEP8=pep8
 fi
 
 if [ ! -z ${PEP8} ]; then