diff --git a/lib/isc/random.c b/lib/isc/random.c
index 0c1930d980..4be9292408 100644
--- a/lib/isc/random.c
+++ b/lib/isc/random.c
@@ -79,19 +79,17 @@ static isc_once_t isc_random_once = ISC_ONCE_INIT;
 
 static void
 isc_random_initialize(void) {
+	int useed[4] = {0,0,0,1};
 #if FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
 	/*
 	 * Set a constant seed to help in problem reproduction should fuzzing
 	 * find a crash or a hang.  The seed array must be non-zero else
 	 * xoshiro128starstar will generate an infinite series of zeroes.
 	 */
-	memset(seed, 0, sizeof(seed));
-	seed[0] = 1;
 #else
-	int useed[4] = {0,0,0,0};
 	isc_entropy_get(useed, sizeof(useed));
-	memcpy(seed, useed, sizeof(seed));
 #endif
+	memcpy(seed, useed, sizeof(seed));
 }
 
 uint8_t