diff --git a/README.rdoc b/README.rdoc
index 5a9e5ee2..1bd45f6c 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -35,7 +35,6 @@
 
 * Update VERSION number of these files
   * <code>RACC_VERSION</code> in "ext/racc/com/headius/racc/Cparse.java"
-  * <code>RACC_VERSION</code> in "ext/racc/cparse/cparse.c"
   * <code>VERSION</code> in "lib/racc/info.rb"
 * Release as a gem by <code>rake release</code> with CRuby and JRuby because Racc gem provides 2 packages
 * Create new release on {GitHub}[https://github.com/ruby/racc/releases]
diff --git a/ext/racc/cparse/cparse.c b/ext/racc/cparse/cparse.c
index ed9cca19..80c72a40 100644
--- a/ext/racc/cparse/cparse.c
+++ b/ext/racc/cparse/cparse.c
@@ -22,7 +22,7 @@
                         Important Constants
 ----------------------------------------------------------------------- */
 
-#define RACC_VERSION "1.7.1"
+#define RACC_VERSION STRINGIZE(RACC_INFO_VERSION)
 
 #define DEFAULT_TOKEN -1
 #define ERROR_TOKEN    1
diff --git a/ext/racc/cparse/extconf.rb b/ext/racc/cparse/extconf.rb
index 6e82d5af..ffec1f9d 100644
--- a/ext/racc/cparse/extconf.rb
+++ b/ext/racc/cparse/extconf.rb
@@ -2,5 +2,7 @@
 #
 
 require 'mkmf'
+require_relative '../../../lib/racc/info'
 
+$defs << "-D""RACC_INFO_VERSION=#{Racc::VERSION}"
 create_makefile 'racc/cparse'