diff --git a/SConstruct b/SConstruct
index e33447f..246cdf7 100644
--- a/SConstruct
+++ b/SConstruct
@@ -10,6 +10,12 @@ version_info =  {
     'version_patch':  0 ,
     'version_revision': revision,
 }
+version_info['version_str'] = "%d.%d.%d.%s" % (
+    version_info['version_major'],
+    version_info['version_minor'],
+    version_info['version_patch'],
+    version_info['version_revision'])
+
 
 AddOption('--build_type', 
             dest = 'build_type',
diff --git a/src/version.c.in b/src/version.c.in
index 086b7e7..6f41e8d 100644
--- a/src/version.c.in
+++ b/src/version.c.in
@@ -5,6 +5,6 @@ const int ucore_version_major = @version_major@;
 const int ucore_version_minor = @version_minor@;
 const int ucore_version_patch = @version_patch@;
 
-const char ucore_version_str[] = "@version_major@.@version_minor@.@version_patch@.@version_revision@";
+const char ucore_version_str[] = "@version_str@";
 const char ucore_build_host[] = "@build_host@";