diff --git a/test/suite.erl b/test/suite.erl
index bc4eadf68..c95d10032 100644
--- a/test/suite.erl
+++ b/test/suite.erl
@@ -214,7 +214,7 @@ setup_ejabberd_lib_path(Config) ->
 	    ok
     end.
 
-%% Read environment variable CT_DB=mysql to limit the backends to test.
+%% Read environment variable CT_BACKENDS=mysql to limit the backends to test.
 %% You can thus limit the backend you want to test with:
 %%  CT_BACKENDS=mysql rebar ct suites=ejabberd
 get_config_backends() ->