diff --git a/.gitignore b/.gitignore
index 69a35d9..8b8a469 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+build/
+
 ### cpp gitignore ###
 # Prerequisites
 *.d
diff --git a/.travis.yml b/.travis.yml
index 5537aa5..256a6e6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,7 @@ env:
   - PLATFORM=x64 CONFIGURATION=Release
 
 script:
+  - rm -rf build
   - mkdir -p build
   - cd build
   - cmake .. -DCMAKE_BUILD_TYPE=$CONFIGURATION -DTARGET_CPU=$PLATFORM
diff --git a/appveyor.yml b/appveyor.yml
index e439a17..22771ca 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -27,6 +27,7 @@ init:
 
 before_build:
   - ps: 'Write-Host "Running $env:BUILDER with $env:GENERATOR" -ForegroundColor Magenta'
+  - if exist build RMDIR /S /Q build
   - if not exist build mkdir build
   - cd build
   - if "%BUILDER%"=="CMake" cmake.exe .. -G "%GENERATOR%" -DCMAKE_BUILD_TYPE=%CONFIGURATION% -DTARGET_CPU=$PLATFORM
diff --git a/build/.gitignore b/build/.gitignore
deleted file mode 100644
index f59ec20..0000000
--- a/build/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-*
\ No newline at end of file