diff --git a/deps/micro-ecc/uECC.c b/deps/micro-ecc/uECC.c
index a3d502c..a3224dd 100644
--- a/deps/micro-ecc/uECC.c
+++ b/deps/micro-ecc/uECC.c
@@ -312,7 +312,7 @@
     uECC_word_t tmp[uECC_MAX_WORDS];
     uECC_word_t neg = !!uECC_vli_sub(tmp, left, right, num_words);
     uECC_word_t equal = uECC_vli_isZero(tmp, num_words);
-    return (!equal - 2 * neg);
+    return (cmpresult_t)(!equal - 2 * neg);
 }
 
 /* Computes vli = vli >> 1. */
@@ -997,7 +997,7 @@
     int i;
     for (i = 0; i < num_bytes; ++i) {
         unsigned b = num_bytes - 1 - i;
-        bytes[i] = native[b / uECC_WORD_SIZE] >> (8 * (b % uECC_WORD_SIZE));
+        bytes[i] = (uint8_t)(native[b / uECC_WORD_SIZE] >> (8 * (b % uECC_WORD_SIZE)));
     }
 }