diff --git a/crypto/x509/x509_vpm.c b/crypto/x509/x509_vpm.c
index 29ee8a738f42a216b1ff7411a2110f86131f34a2..6305406756f69686639379343a246aaa023660cf 100644
--- a/crypto/x509/x509_vpm.c
+++ b/crypto/x509/x509_vpm.c
@@ -161,16 +161,16 @@ X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)
     X509_VERIFY_PARAM *param;
     X509_VERIFY_PARAM_ID *paramid;
 
-    param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));
+    param = OPENSSL_malloc(sizeof *param);
     if (!param)
         return NULL;
-    paramid = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));
+    paramid = OPENSSL_malloc(sizeof *paramid);
     if (!paramid) {
         OPENSSL_free(param);
         return NULL;
     }
-    memset(param, 0, sizeof(X509_VERIFY_PARAM));
-    memset(paramid, 0, sizeof(X509_VERIFY_PARAM_ID));
+    memset(param, 0, sizeof *paramid);
+    memset(paramid, 0, sizeof *paramid);
     param->id = paramid;
     x509_verify_param_zero(param);
     return param;