diff --git a/res/res_srtp.c b/res/res_srtp.c
index f3f8999c69..10caec60c0 100644
--- a/res/res_srtp.c
+++ b/res/res_srtp.c
@@ -30,6 +30,7 @@
 
 /*** MODULEINFO
 	<depend>srtp</depend>
+	<use type="external">openssl</use>
 	<support_level>core</support_level>
 ***/