diff --git a/tests/check_syntax.sh b/tests/check_syntax.sh
index b62f25f..48b0e67 100755
--- a/tests/check_syntax.sh
+++ b/tests/check_syntax.sh
@@ -1 +1,5 @@
-phpcs --standard=PSR2 --extensions=php ..
+phpcs \
+    --extensions=php \
+    --ignore="*/vendor/*" \
+    --standard=PSR2 \
+    ..