diff --git a/Library/Homebrew/dev-cmd/prof.rb b/Library/Homebrew/dev-cmd/prof.rb
index d5b100c165..dfc7f1ae18 100644
--- a/Library/Homebrew/dev-cmd/prof.rb
+++ b/Library/Homebrew/dev-cmd/prof.rb
@@ -32,7 +32,7 @@ module Homebrew
     if args.stackprof?
       Homebrew.install_gem_setup_path! "stackprof"
       with_env HOMEBREW_STACKPROF: "1" do
-        system RUBY_PATH, brew_rb, *args.named
+        system(*HOMEBREW_RUBY_EXEC_ARGS, brew_rb, *args.named)
       end
       output_filename = "prof/d3-flamegraph.html"
       safe_system "stackprof --d3-flamegraph prof/stackprof.dump > #{output_filename}"