diff --git a/regress/misc/fuzz-harness/kex_fuzz.cc b/regress/misc/fuzz-harness/kex_fuzz.cc
index fc145d48d..d38ca8597 100644
--- a/regress/misc/fuzz-harness/kex_fuzz.cc
+++ b/regress/misc/fuzz-harness/kex_fuzz.cc
@@ -326,7 +326,7 @@ int main(void)
 	static struct shared_state *st;
 	struct test_state *ts;
 	const int keytypes[] = { KEY_RSA, KEY_DSA, KEY_ECDSA, KEY_ED25519, -1 };
-	const char *kextypes[] = {
+	static const char * const kextypes[] = {
 		"sntrup761x25519-sha512@openssh.com",
 		"curve25519-sha256@libssh.org",
 		"ecdh-sha2-nistp256",