diff --git a/pkgs/build-support/testers/hasPkgConfigModules/tester.nix b/pkgs/build-support/testers/hasPkgConfigModules/tester.nix
index b8ae884ba7b0..6a09255bde6c 100644
--- a/pkgs/build-support/testers/hasPkgConfigModules/tester.nix
+++ b/pkgs/build-support/testers/hasPkgConfigModules/tester.nix
@@ -55,7 +55,7 @@ runCommand testName {
       fi
     done
 
-    if [[ $notFound -eq 0 ]] && ([[ $versionMismatch -eq 0 ]] || [[ "$versionCheck" == false ]]); then
+    if [[ $notFound -eq 0 ]] && ([[ $versionMismatch -eq 0 ]] || [[ -z "$versionCheck" ]]); then
       exit 0
     fi
     if [[ $notFound -ne 0 ]]; then