diff --git a/Formula/arm-gcc-bin@13.rb b/Formula/arm-gcc-bin@13.rb
index 7550edb..45c66ed 100644
--- a/Formula/arm-gcc-bin@13.rb
+++ b/Formula/arm-gcc-bin@13.rb
@@ -38,6 +38,6 @@ def install
   end
 
   test do
-    assert_match "Arm GNU Toolchain #{version}", `#{opt_prefix}/bin/arm-none-eabi-gcc --version`
+    assert_match "Arm GNU Toolchain #{version.downcase}", `#{opt_prefix}/bin/arm-none-eabi-gcc --version`.strip.downcase
   end
 end