diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index d2bf1087569fb8149603d4edd5589451aa5b411a..6420b5d6eb22c367b135e93e5137c1cd72912279 100644
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -53,6 +53,7 @@
 
 /*** MODULEINFO
 	<use type="module">res_crypto</use>
+	<use type="external">crypto</use>
 	<support_level>core</support_level>
  ***/
 
diff --git a/funcs/func_aes.c b/funcs/func_aes.c
index af3f257e50b3ba5cfacc79bef201b1cb0dbf6654..6a56909d38f8cc0036664ce71790a9d3451c4a35 100644
--- a/funcs/func_aes.c
+++ b/funcs/func_aes.c
@@ -24,6 +24,7 @@
 
 /*** MODULEINFO
 	<use type="module">res_crypto</use>
+	<use type="external">crypto</use>
 	<support_level>core</support_level>
  ***/
 
diff --git a/pbx/pbx_dundi.c b/pbx/pbx_dundi.c
index 0420917231e8eb89039b2aa7295c1183e56185f5..e356d6fdeffcd84615b80bb45cecb8cebfeffbd4 100644
--- a/pbx/pbx_dundi.c
+++ b/pbx/pbx_dundi.c
@@ -33,6 +33,7 @@
 /*** MODULEINFO
 	<depend>zlib</depend>
 	<use type="module">res_crypto</use>
+	<use type="external">crypto</use>
 	<support_level>extended</support_level>
  ***/