diff --git a/games/acm/Makefile b/games/acm/Makefile
index a6a80147f087..696dfc034852 100644
--- a/games/acm/Makefile
+++ b/games/acm/Makefile
@@ -3,7 +3,7 @@
 
 PORTNAME=	acm
 PORTVERSION=	5.0
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	games
 MASTER_SITES=	http://mirror.amdmi3.ru/distfiles/
 
diff --git a/games/acm/files/patch-V_lib_InitAWin.c b/games/acm/files/patch-V_lib_InitAWin.c
new file mode 100644
index 000000000000..98994057ee19
--- /dev/null
+++ b/games/acm/files/patch-V_lib_InitAWin.c
@@ -0,0 +1,16 @@
+--- V/lib/InitAWin.c.orig	1998-08-14 21:09:02 UTC
++++ V/lib/InitAWin.c
+@@ -69,6 +69,13 @@ InitializeX11AWindow(Display * dpy, int screen, Drawab
+ 	w->csPool1 = (ColorSegment *) malloc(w->CSSize1 * sizeof(ColorSegment));
+ 	memset(w->csPool1, 0, w->CSSize1 * sizeof(ColorSegment));
+ 
++	// Initialize csPool2 so program doesn't crash later,
++	// when trying to free it.
++	{
++		w->CSSize2 = 0;
++		w->csPool2 = (ColorSegment *) NULL;
++	}
++
+ 	w->scanLine = (ScanLine *) malloc((w->height + 1) * sizeof(ScanLine));
+ 	w->lastScanLine = (ScanLine *) malloc((w->height + 1) * sizeof(ScanLine));
+ 	w->otherLastScanLine = NULL;