diff --git a/wolfcrypt/src/random.c b/wolfcrypt/src/random.c
index 93cdb9362..4e4f4e238 100644
--- a/wolfcrypt/src/random.c
+++ b/wolfcrypt/src/random.c
@@ -794,7 +794,7 @@ int wc_RNG_TestSeed(const byte* seed, word32 seedSz)
     int rctFailed = 0;
     int aptFailed = 0;
 
-    if (seed == NULL || seedSz == 0) {
+    if (seed == NULL || seedSz < SEED_BLOCK_SZ) {
         return BAD_FUNC_ARG;
     }