diff --git a/tests/ps-syntax.sh b/tests/ps-syntax.sh
index 0158c44..55ff182 100755
--- a/tests/ps-syntax.sh
+++ b/tests/ps-syntax.sh
@@ -29,7 +29,7 @@ if [[ $count -le 0 ]]; then
     exit 1
 fi
 l=$(head -n 1 <<< $output)
-if [[ !( $l =~ ^v=[0-9]+\.[0-9]+\.[0-9](-.+)?, ) ]]; then
+if [[ !( $l =~ ^v=[0-9]+\.[0-9]+\.[0-9]+(-.+)?, ) ]]; then
     echo "CSV version missing, got $l"
     exit 1
 fi