diff --git a/src/main/bash/sdkman-utils.sh b/src/main/bash/sdkman-utils.sh
index c41c67e0..d269ec06 100644
--- a/src/main/bash/sdkman-utils.sh
+++ b/src/main/bash/sdkman-utils.sh
@@ -105,12 +105,12 @@ function __sdkman_echo_confirm {
 }
 
 function __sdkman_legacy_bash_message {
-    if [[ "$bash_shell" == 'true' && -z "$(bash --version | grep 'GNU bash, version 4..*')" ]]; then
+    if [[ "$bash_shell" == 'true' && "$BASH_VERSINFO" -lt 4 ]]; then
         __sdkman_echo_red "An outdated version of bash was detected on your system!"
         echo ""
         __sdkman_echo_red "We recommend upgrading to bash 4.x, you have:"
         echo ""
-        __sdkman_echo_yellow "  $(bash --version | grep 'GNU bash, version')"
+        __sdkman_echo_yellow "  $(bash --version | head -n1)"
         echo ""
     fi
-}
\ No newline at end of file
+}