diff --git a/docs/make.bat b/docs/make.bat
index 0df8b19753..b2c541f7a5 100644
--- a/docs/make.bat
+++ b/docs/make.bat
@@ -1,5 +1,7 @@
 @ECHO OFF
 
+rmdir /s /q _build
+
 REM Command file for Sphinx documentation
 
 if "%SPHINXBUILD%" == "" (