diff --git a/src/FbAtoms.cc b/src/FbAtoms.cc
index 409a99fc..bc771b73 100644
--- a/src/FbAtoms.cc
+++ b/src/FbAtoms.cc
@@ -37,6 +37,7 @@ FbAtoms::FbAtoms() {
     xa_wm_change_state = XInternAtom(dpy, "WM_CHANGE_STATE", False);
     xa_wm_delete_window = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
     xa_wm_take_focus = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
+    motif_wm_info = XInternAtom(dpy, "_MOTIF_WM_INFO", False);
     motif_wm_hints = XInternAtom(dpy, "_MOTIF_WM_HINTS", False);
 
     blackbox_attributes = XInternAtom(dpy, "_BLACKBOX_ATTRIBUTES", False);
diff --git a/src/FbAtoms.hh b/src/FbAtoms.hh
index 3ed52a54..dd1478c4 100644
--- a/src/FbAtoms.hh
+++ b/src/FbAtoms.hh
@@ -47,6 +47,7 @@ private:
     FbAtoms();
 
     Atom blackbox_attributes;
+    Atom motif_wm_info;
     Atom motif_wm_hints;
     Atom xa_wm_protocols;
     Atom xa_wm_state;