diff --git a/rebar.config.sample b/rebar.config.sample
index fac55af..54a9b5a 100644
--- a/rebar.config.sample
+++ b/rebar.config.sample
@@ -46,7 +46,7 @@
 %% architecture as a filter.
 {port_specs, [{"priv/so_name.so", ["c_src/*.c"]},
               {"linux", "priv/hello_linux", ["c_src/hello_linux.c"]},
-              {"linux", "priv/hello_linux", ["c_src/*.c"], [{env, []}]}}.
+              {"linux", "priv/hello_linux", ["c_src/*.c"], [{env, []}]}]}.
 
 %% == LFE Compiler ==