diff --git a/packaging/windows/install.ps1 b/packaging/windows/install.ps1
index eb793a65d..714851fdc 100644
--- a/packaging/windows/install.ps1
+++ b/packaging/windows/install.ps1
@@ -8,7 +8,7 @@ If ($(APPVEYOR_REPO_TAG) -Match "true") {
       exit 0
    }
    # non-testing tags should be in the form v1.2.3
-   If ("v$(C:\Python27\python.exe setup.py -V" -Match $(APPVEYOR_REPO_TAG_NAME)) {
+   If ("v$(C:\Python27\python.exe setup.py -V)" -Match $(APPVEYOR_REPO_TAG_NAME)) {
       exit 0
    }
    exit 1