diff --git a/docs/CMock_Summary.md b/docs/CMock_Summary.md
index 4e700e0..9a89634 100644
--- a/docs/CMock_Summary.md
+++ b/docs/CMock_Summary.md
@@ -477,11 +477,11 @@ from the defaults. We've tried to specify what the defaults are below.
 
   * default: `['(?:__attribute__\s*\(+.*?\)+)']`
 
-* `:has_setjmp_h`:
-  Some embedded systems don't have <setjmp.h> available. Setting this to false
+* `:exclude_setjmp_h`:
+  Some embedded systems don't have <setjmp.h> available. Setting this to true
   removes references to this header file and the ability to use cexception.
 
-  * default: true
+  * default: false
 
 
 * `:subdir`:
diff --git a/lib/cmock_config.rb b/lib/cmock_config.rb
index 2a3e5f8..716a0c5 100644
--- a/lib/cmock_config.rb
+++ b/lib/cmock_config.rb
@@ -41,7 +41,7 @@ class CMockConfig
       :array_size_type             => [],
       :array_size_name             => 'size|len',
       :skeleton                    => false,
-      :has_setjmp_h                => true,
+      :exclude_setjmp_h            => false,
 
       # Format to look for inline functions.
       # This is a combination of "static" and "inline" keywords ("static inline", "inline static", "inline", "static")
diff --git a/lib/cmock_generator.rb b/lib/cmock_generator.rb
index f0372a3..ec06ab4 100644
--- a/lib/cmock_generator.rb
+++ b/lib/cmock_generator.rb
@@ -170,7 +170,7 @@ class CMockGenerator
     file << "/* AUTOGENERATED FILE. DO NOT EDIT. */\n" unless functions.empty?
     file << "#include <string.h>\n"
     file << "#include <stdlib.h>\n"
-    if @has_setjmp_h
+    unless @exclude_setjmp_h
       file << "#include <setjmp.h>\n"
     end
     file << "#include \"cmock.h\"\n"
@@ -208,7 +208,7 @@ class CMockGenerator
   end
 
   def create_extern_declarations(file)
-    if @has_setjmp_h
+    unless @exclude_setjmp_h
       file << "extern jmp_buf AbortFrame;\n"
     end
     if @ordered