diff --git a/openshift-install-powervs b/openshift-install-powervs
index 23b0474..5dd8622 100755
--- a/openshift-install-powervs
+++ b/openshift-install-powervs
@@ -1556,7 +1556,7 @@ function platform_checks {
   case "$PLATFORM" in
     "Darwin")
       OS_VERSION=$(sw_vers -productVersion 2>/dev/null || echo "")
-      if [[ $IGNORE_OS -eq 0 ]] && [[ $OS_VERSION != "10.15"* && $OS_VERSION != "11."* && $OS_VERSION != "12."* && $OS_VERSION != "13."* ]]; then
+      if [[ $IGNORE_OS -eq 0 ]] && [[ $(echo "$OS_VERSION" | cut -d'.' -f1) -lt 10 ]]; then
         error "Unsupported OS version ($OS_VERSION) for Mac"
       fi
       PACKAGE_MANAGER="brew"