diff --git a/Library/Homebrew/extend/os/mac/system_config.rb b/Library/Homebrew/extend/os/mac/system_config.rb
index d45eb2e0f5..1e22d916ea 100644
--- a/Library/Homebrew/extend/os/mac/system_config.rb
+++ b/Library/Homebrew/extend/os/mac/system_config.rb
@@ -7,7 +7,7 @@ module SystemConfig
   class << self
     include SystemCommand::Mixin
 
-    undef describe_homebrew_ruby
+    undef describe_homebrew_ruby, describe_clang
 
     def describe_homebrew_ruby
       s = describe_homebrew_ruby_version
@@ -19,6 +19,13 @@ module SystemConfig
       end
     end
 
+    def describe_clang
+      return "N/A" if clang.null?
+
+      clang_build_info = clang_build.null? ? "(parse error)" : clang_build
+      "#{clang} build #{clang_build_info}"
+    end
+
     def xcode
       @xcode ||= if MacOS::Xcode.installed?
         xcode = MacOS::Xcode.version.to_s
diff --git a/Library/Homebrew/system_config.rb b/Library/Homebrew/system_config.rb
index cc58ef1262..a019aa4de0 100644
--- a/Library/Homebrew/system_config.rb
+++ b/Library/Homebrew/system_config.rb
@@ -76,8 +76,11 @@ module SystemConfig
     def describe_clang
       return "N/A" if clang.null?
 
-      clang_build_info = clang_build.null? ? "(parse error)" : clang_build
-      "#{clang} build #{clang_build_info}"
+      if clang_build.null?
+        clang.to_s
+      else
+        "#{clang} build #{clang_build}"
+      end
     end
 
     def describe_path(path)