diff --git a/scripts/appveyor/build_installer.ps1 b/scripts/appveyor/build_installer.ps1
index 2b40a07a..b3578825 100644
--- a/scripts/appveyor/build_installer.ps1
+++ b/scripts/appveyor/build_installer.ps1
@@ -1,7 +1,7 @@
 
 $innoInstallPath = 'C:\Program Files (x86)\Inno Setup 5'
 
-if ($env:APPVEYOR_REPO_TAG) {
+if ($env:APPVEYOR_REPO_TAG -eq 'true') {
   if (!(Test-Path $innoInstallPath)) {
     choco install -y InnoSetup
 
diff --git a/scripts/appveyor/deploy_docs.ps1 b/scripts/appveyor/deploy_docs.ps1
index 12b05c39..3aaa8df4 100644
--- a/scripts/appveyor/deploy_docs.ps1
+++ b/scripts/appveyor/deploy_docs.ps1
@@ -19,7 +19,7 @@ $docsFiles = @(
 
 $commitMessage = 'Add v' + $env:APPVEYOR_REPO_TAG_NAME + ' release docs'
 
-if ($env:APPVEYOR_REPO_TAG) {
+if ($env:APPVEYOR_REPO_TAG -eq 'true') {
   cd 'C:\projects'
   git clone $docsRepoUrl