diff --git a/Library/Homebrew/dev-cmd/audit.rb b/Library/Homebrew/dev-cmd/audit.rb
index ee5fb8df81..16ae7cba10 100644
--- a/Library/Homebrew/dev-cmd/audit.rb
+++ b/Library/Homebrew/dev-cmd/audit.rb
@@ -967,12 +967,12 @@ class FormulaAuditor
       problem "Use `assert_match` instead of `assert ...include?`"
     end
 
-    if line =~ /(assert File\.exist\?|File\.exist\?)/
+    if line =~ /(assert File\.exist\?|assert \(.*\)\.exist\?)/
       problem "Use `assert_predicate <path_to_file>, :exist?` instead of `#{Regexp.last_match(1)}`"
     end
 
-    if line =~ /(assert !File\.exist\?|!File\.exist\?)/
-      problem "Use `refute_predicate <path_to_file>, :exist?` instead of `#{Regexp.last_match(1)}`"
+    if line =~ /assert !File\.exist\?/
+      problem "Use `refute_predicate <path_to_file>, :exist?` instead of `assert !File.exist?`"
     end
 
     return unless @strict