diff --git a/wolfcrypt/test/test.c b/wolfcrypt/test/test.c
index 2143e0850..f9cf28c0a 100644
--- a/wolfcrypt/test/test.c
+++ b/wolfcrypt/test/test.c
@@ -10489,7 +10489,7 @@ static int ecc_test_make_pub(WC_RNG* rng)
         goto exit_ecc_make_pub;
     }
 
-    tmpSz = fread(tmp, 1, FOURK_BUF, file);
+    tmpSz = (word32)fread(tmp, 1, FOURK_BUF, file);
     fclose(file);
 #endif /* USE_CERT_BUFFERS_256 */