config.def.h | 6 ++++++

diff --git a/config.def.h b/config.def.h
index d2c547c3105c877f9cac8b8eb6b8c510ae5f41fc..e2bbe43ede4de420c3fe65286072217e6c917670 100644
--- a/config.def.h
+++ b/config.def.h
@@ -73,6 +73,12 @@  * the st.info and appropriately install the st.info in the environment where
  * you use this st version.
  *
  *	it#$tabspaces,
+ *
+ * Secondly make sure your terminal is not expanding tabs. When running `stty
+ * -a` »tab0« should appear. You can tell the terminal to not expand tabs by
+ *  running following command:
+ *
+ *	stty tabs
  */
 static unsigned int tabspaces = 8;