diff --git a/prebuild.ps1 b/prebuild.ps1
index 0390a669c..8e9161b19 100644
--- a/prebuild.ps1
+++ b/prebuild.ps1
@@ -46,4 +46,4 @@ Function FillCredentials {
 FillCredentials
 
 # Write the certificate to a file
-[System.Convert]::FromBase64String($env:CertificatePassword) | set-content "greenshot.pfx" -encoding byte
+[System.Convert]::FromBase64String($env:Certificate) | set-content "greenshot.pfx" -encoding byte