diff --git a/.gitignore b/.gitignore
index a22027a..c3552fe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@
 .vscode/*
 !.vscode/extensions.json
 .idea
+.vs
 *.suo
 *.ntvs*
 *.njsproj
@@ -16,3 +17,4 @@ dev/**
 # Build results
 build*/**
 Testing/**
+out/**
diff --git a/test/test.cpp b/test/test.cpp
index 9138718..88caba3 100644
--- a/test/test.cpp
+++ b/test/test.cpp
@@ -803,7 +803,7 @@ void subtestPower() {
     }
   }
 
-  T_assert(BigInt("0x100").pow(0xFFFF) == BigInt::from2Exp(0xFFFF * 8));
+  T_assert(BigInt("0x100").pow(0xFFF) == BigInt::from2Exp(0xFFF * 8));
 }
 void subtestSqrt() {
   puts("======Subtest Sqrt");