diff --git a/app/modules/crypto.c b/app/modules/crypto.c
index 87b18146..1f9f189f 100644
--- a/app/modules/crypto.c
+++ b/app/modules/crypto.c
@@ -238,7 +238,6 @@ static int crypto_hash_gcdelete (lua_State *L)
   luaL_argcheck(L, dudat, 1, "crypto.hash expected");
 
   os_free(dudat->ctx);
-  os_free(dudat);
 
   return 0;
 }