diff --git a/include/aws/crt/Variant.h b/include/aws/crt/Variant.h
index f973316e6..e4cec4af5 100644
--- a/include/aws/crt/Variant.h
+++ b/include/aws/crt/Variant.h
@@ -53,7 +53,7 @@ namespace Aws
             {
                 using VariantIndex = short;
 
-                template <typename T, typename Last> constexpr VariantIndex GetIndexOf(VariantIndex curIndex = -1)
+                template <typename T, typename Last> constexpr VariantIndex GetIndexOf(VariantIndex curIndex = 0)
                 {
                     return std::is_same<T, Last>::value ? curIndex : -1;
                 }