diff --git a/wolfcrypt/src/dilithium.c b/wolfcrypt/src/dilithium.c
index 58d830692e..6442750435 100644
--- a/wolfcrypt/src/dilithium.c
+++ b/wolfcrypt/src/dilithium.c
@@ -8333,13 +8333,13 @@ static int dilithium_sign_with_seed_mu(dilithium_key* key,
 #ifdef WC_DILITHIUM_CACHE_MATRIX_A
 #ifndef WC_DILITHIUM_FIXED_ARRAY
     if ((ret == 0) && (key->a == NULL)) {
-        key->a = (sword32*)XMALLOC(params->aSz, key->heap,
+        key->a = (sword32*)XMALLOC((size_t)params->aSz, key->heap,
             DYNAMIC_TYPE_DILITHIUM);
         if (key->a == NULL) {
             ret = MEMORY_E;
         }
         else {
-            XMEMSET(key->a, 0, params->aSz);
+            XMEMSET(key->a, 0, (size_t)params->aSz);
         }
     }
 #endif