diff --git a/lib/hx509/ks_p11.c b/lib/hx509/ks_p11.c
index f0f4be35d..1c954b06c 100644
--- a/lib/hx509/ks_p11.c
+++ b/lib/hx509/ks_p11.c
@@ -664,7 +664,7 @@ p11_release_module(struct p11_module *p)
 	dlclose(p->dl_handle);
     if (p->slot.name)
 	free(p->slot.name);
-    memset(p, 0, sizeof(*P));
+    memset(p, 0, sizeof(*p));
     free(p);
 }