diff --git a/sys/fs/pefs/pefs_vfsops.c b/sys/fs/pefs/pefs_vfsops.c
index 0fc4b85..93b2d80 100644
--- a/sys/fs/pefs/pefs_vfsops.c
+++ b/sys/fs/pefs/pefs_vfsops.c
@@ -322,3 +322,5 @@ static struct vfsops pefs_vfsops = {
 
 VFS_SET(pefs_vfsops, pefs, VFCF_LOOPBACK);
 MODULE_DEPEND(pefs, salsa20, 1, 1, 1);
+MODULE_DEPEND(pefs, crypto, 1, 1, 1);
+