diff --git a/lib/cmock_header_parser.rb b/lib/cmock_header_parser.rb
index 69ab323..c910052 100644
--- a/lib/cmock_header_parser.rb
+++ b/lib/cmock_header_parser.rb
@@ -94,7 +94,14 @@ class CMockHeaderParser
     end
 
     # remove nested pairs of braces because no function declarations will be inside of them (leave outer pair for function definition detection)
-    source.gsub!(/\{([^\{\}]*|\g<0>)*\}/m, '{ }')
+    if (RUBY_VERSION.split('.')[0].to_i > 1)
+      #we assign a string first because (no joke) if Ruby 1.9.3 sees this line as a regex, it will crash.
+      r = "\\{([^\\{\\}]*|\\g<0>)*\\}"
+      source.gsub!(/#{r}/m, '{ }')
+    else
+      while source.gsub!(/\{[^\{\}]*\{[^\{\}]*\}[^\{\}]*\}/m, '{ }')
+      end
+    end
 
     # remove function definitions by stripping off the arguments right now
     source.gsub!(/\([^\)]*\)\s*\{[^\}]*\}/m, ";")