diff --git a/graphviz-plugins.changes b/graphviz-plugins.changes
index af1735b..6b89d7d 100644
--- a/graphviz-plugins.changes
+++ b/graphviz-plugins.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri May 31 08:08:44 UTC 2013 - mhrusecky@suse.com
+
+- use %rb_ver to decide correct ruby version
+
 -------------------------------------------------------------------
 Thu Mar 28 11:51:09 CET 2013 - pth@suse.de
 
diff --git a/graphviz-plugins.spec b/graphviz-plugins.spec
index 27d5982..ac93f16 100644
--- a/graphviz-plugins.spec
+++ b/graphviz-plugins.spec
@@ -283,7 +283,7 @@ CFLAGS="%{optflags} $WARN_FLAGS"
 CFLAGS="$CFLAGS -ffast-math"
 %endif
 %if %suse_version > 1210
-rubyflags=$(pkg-config --cflags ruby-1.9)
+rubyflags=$(pkg-config --cflags ruby-$(echo %rb_ver | sed 's|\.[^.]*$||'))
 CFLAGS="$CFLAGS $rubyflags"
 CXXFLAGS="$CXXFLAGS $rubyflags"
 %endif