diff --git a/Formula/g/goplus.rb b/Formula/g/goplus.rb
index b185c235b7b2..24e37783c631 100644
--- a/Formula/g/goplus.rb
+++ b/Formula/g/goplus.rb
@@ -42,7 +42,7 @@ def install
 
     assert_equal "v#{version}", shell_output("#{bin}/gop env GOPVERSION").chomp
     system bin/"gop", "fmt", "hello.gop"
-    assert_equal "Hello World\n", shell_output("#{bin}/gop run hello.gop")
+    assert_equal "Hello World\n", shell_output("#{bin}/gop run hello.gop 2>&1")
 
     (testpath/"go.mod").write <<~GOMOD
       module hello
@@ -50,6 +50,6 @@ module hello
 
     system "go", "get", "github.com/goplus/gop/builtin"
     system bin/"gop", "build", "-o", "hello"
-    assert_equal "Hello World\n", shell_output("./hello")
+    assert_equal "Hello World\n", shell_output("./hello 2>&1")
   end
 end