diff --git a/build/winsign/sign.ps1 b/build/winsign/sign.ps1
index 6d7351f5..92bd963d 100644
--- a/build/winsign/sign.ps1
+++ b/build/winsign/sign.ps1
@@ -6,6 +6,7 @@ param(
 $ErrorActionPreference = "Stop"
 
 echo "Preparing environment"
+rmdir engine\obj-x86_64-pc-windows-msvc\ -Recurse -ErrorAction SilentlyContinue
 mkdir windsign-temp -ErrorAction SilentlyContinue
 mkdir engine\obj-x86_64-pc-windows-msvc\ -ErrorAction SilentlyContinue