diff --git a/README.md b/README.md
index 546d587..df314ee 100644
--- a/README.md
+++ b/README.md
@@ -4,9 +4,13 @@ tgdbm
 It is a clone for [Tgdbm package](http://www.vogel-nest.de/tgdbmqgdbm-library-for-tcl-version-0-5/).
 I use TEA to build this package.
 
-Only test on openSUSE LEAP 42.3.
-If you want to buld this package, it is necesarry to install development files for GDBM:
+Only test on openSUSE LEAP 42.3 and Ubuntu 14.04.
+If you want to build this package on openSUSE, it is necesarry to install development files for GDBM:
 
 	sudo zypper in gdbm-devel
 
+If you want to build this package on Ubuntu, it is necesarry to install development files for GDBM:
+
+	sudo apt-get install libgdbm-dev
+
 And I update the error code table since GDBM_UNKNOWN_UPDATE is not used in my current GDBM version.