diff --git a/include/polarssl/certs.h b/include/polarssl/certs.h
index c793932..af8fcd6 100644
--- a/include/polarssl/certs.h
+++ b/include/polarssl/certs.h
@@ -38,6 +38,7 @@
 extern const char test_srv_key[];
 extern const char test_cli_crt[];
 extern const char test_cli_key[];
+extern const char test_dhm_params[];
 
 #ifdef __cplusplus
 }