diff --git a/src/gui.h b/src/gui.h
index 6544244..76ff315 100644
--- a/src/gui.h
+++ b/src/gui.h
@@ -158,6 +158,10 @@
 #endif
 #define TOOLBAR_BORDER_HEIGHT	12  /* room above+below buttons for MSWindows */
 
+#ifdef FEAT_GUI_MSWIN
+# define TABLINE_HEIGHT 24
+#endif
+
 #if defined(NO_CONSOLE) || defined(FEAT_GUI_GTK) || defined(FEAT_GUI_X11)
 # define NO_CONSOLE_INPUT	/* use no_console_input() to check if there
 				   is no console input possible */