diff --git a/tests/unity/src/unity.c b/tests/unity/src/unity.c
index 54a3452..ece0d9b 100644
--- a/tests/unity/src/unity.c
+++ b/tests/unity/src/unity.c
@@ -194,7 +194,7 @@ void UnityPrintNumberHex(const UNITY_UINT number, const char nibbles_to_print)
     while (nibbles > 0)
     {
         nibbles--;
-        nibble = (number >> (nibbles * 4)) & 0x0F;
+        nibble = (int)(number >> (nibbles * 4)) & 0x0F;
         if (nibble <= 9)
         {
             UNITY_OUTPUT_CHAR((char)('0' + nibble));