diff --git a/global.conf b/global.conf
index 3c65c93..3d82770 100644
--- a/global.conf
+++ b/global.conf
@@ -8,4 +8,4 @@ tools.gnu:define_libcxx11_abi = True
 # Otherwise .bat files are created. Maybe we should define this on a recipe basis:
 #
 #{% if platform.system() == 'Windows' %}tools.env.virtualenv:powershell=True{% endif %}
-{% if platform.system() == 'Windows' %}core.package_id:msvc_visual_incompatible{% endif %}
+{% if platform.system() == 'Windows' %}core.package_id:msvc_visual_incompatible=True{% endif %}