diff --git a/test/enginetest.c b/test/enginetest.c
index 096a334d1f..dfd5c3f28b 100644
--- a/test/enginetest.c
+++ b/test/enginetest.c
@@ -162,8 +162,8 @@ static int test_engines(void)
         ENGINE_free(ptr);
     }
     for (loop = 0; loop < NUMTOADD; loop++) {
-        OPENSSL_free((void *)ENGINE_get_id(block[loop]));
-        OPENSSL_free((void *)ENGINE_get_name(block[loop]));
+        OPENSSL_free((void *)(intptr_t)ENGINE_get_id(block[loop]));
+        OPENSSL_free((void *)(intptr_t)ENGINE_get_name(block[loop]));
     }
     to_return = 1;