diff --git a/lib/dns/openssleddsa_link.c b/lib/dns/openssleddsa_link.c
index f6d1fa3a14..7e976a7756 100644
--- a/lib/dns/openssleddsa_link.c
+++ b/lib/dns/openssleddsa_link.c
@@ -527,7 +527,7 @@ openssleddsa_fromlabel(dst_key_t *key, const char *engine, const char *label,
 		goto err;
 	}
 
-	if (key->engine != NULL) {
+	if (engine != NULL) {
 		key->engine = isc_mem_strdup(key->mctx, engine);
 	}
 	key->label = isc_mem_strdup(key->mctx, label);
diff --git a/lib/dns/opensslrsa_link.c b/lib/dns/opensslrsa_link.c
index 54ab04dcf7..79cae64add 100644
--- a/lib/dns/opensslrsa_link.c
+++ b/lib/dns/opensslrsa_link.c
@@ -1051,7 +1051,7 @@ opensslrsa_fromlabel(dst_key_t *key, const char *engine, const char *label,
 		DST_RET(ISC_R_RANGE);
 	}
 
-	if (key->engine != NULL) {
+	if (engine != NULL) {
 		key->engine = isc_mem_strdup(key->mctx, engine);
 	}
 	key->label = isc_mem_strdup(key->mctx, label);