diff --git a/linkhash.c b/linkhash.c
index 5497061a8a..b8c9c6b193 100644
--- a/linkhash.c
+++ b/linkhash.c
@@ -482,7 +482,7 @@ static unsigned long lh_char_hash(const void *k)
 #endif
 	}
 
-	return hashlittle((const char*)k, strlen((const char*)k), random_seed);
+	return hashlittle((const char*)k, strlen((const char*)k), (uint32_t)random_seed);
 }
 
 int lh_char_equal(const void *k1, const void *k2)