diff -Naur wmtimer-2.92.orig/wmgeneral/wmgeneral.c wmtimer-2.92/wmgeneral/wmgeneral.c
--- wmtimer-2.92.orig/wmgeneral/wmgeneral.c	2004-01-29 03:38:58.000000000 +0100
+++ wmtimer-2.92/wmgeneral/wmgeneral.c	2020-02-24 22:07:07.028810885 +0100
@@ -67,6 +67,7 @@
 GC NormalGC;
 XpmIcon wmgen;
 Pixmap pixmask;
+Display *display;
 
 char *textColor = NULL;
 XpmColorSymbol colorSymbols[3] = { {"Text", NULL, 0} };
diff -Naur wmtimer-2.92.orig/wmgeneral/wmgeneral.h wmtimer-2.92/wmgeneral/wmgeneral.h
--- wmtimer-2.92.orig/wmgeneral/wmgeneral.h	2001-10-11 07:38:39.000000000 +0200
+++ wmtimer-2.92/wmgeneral/wmgeneral.h	2020-02-24 22:06:49.756805063 +0100
@@ -40,7 +40,7 @@
  /* Global variable */
 /*******************/
 
-Display *display;
+extern Display *display;
 
 /***********************/
  /* Function Prototypes */