diff --git a/workspace.cpp b/workspace.cpp
index 150beecd6c..c46c6272ba 100644
--- a/workspace.cpp
+++ b/workspace.cpp
@@ -310,6 +310,7 @@ void Workspace::init()
         NET::WM2ShowingDesktop |
         NET::WM2DesktopLayout |
         NET::WM2FullPlacement |
+        NET::WM2FullscreenMonitors |
         0
         ,
         NET::ActionMove |