diff --git a/lib/hcrypto/engine.c b/lib/hcrypto/engine.c
index 3b22e5620..2f34d6e56 100644
--- a/lib/hcrypto/engine.c
+++ b/lib/hcrypto/engine.c
@@ -88,7 +88,7 @@ ENGINE_finish(ENGINE *engine)
     if(engine->destroy)
 	(*engine->destroy)(engine);
 
-    memset(engine, 0, sizeof(engine));
+    memset(engine, 0, sizeof(*engine));
     engine->references = -1;