diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c
index b2b6e8593c69d6c05b1013ce33ce51f40a3c3e91..f247304e21500eb51632b3682e346ff4f112d7c8 100644
--- a/hw/cirrus_vga.c
+++ b/hw/cirrus_vga.c
@@ -2874,20 +2874,7 @@ static void cirrus_vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
 		s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
 	    return;
 	}
-	switch (s->cr_index) {
-	case 0x01:		/* horizontal display end */
-	case 0x07:
-	case 0x09:
-	case 0x0c:
-	case 0x0d:
-	case 0x12:		/* vertical display end */
-	    s->cr[s->cr_index] = val;
-	    break;
-
-	default:
-	    s->cr[s->cr_index] = val;
-	    break;
-	}
+	s->cr[s->cr_index] = val;
 
 	switch(s->cr_index) {
 	case 0x00:
diff --git a/hw/vga.c b/hw/vga.c
index 0d4e558f3bdabd90affced9b25a57f302e5fff3d..ff97aa7d61936e089719b8ac1851aec0d73e8938 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -488,19 +488,7 @@ void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
                 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
             return;
         }
-        switch(s->cr_index) {
-        case 0x01: /* horizontal display end */
-        case 0x07:
-        case 0x09:
-        case 0x0c:
-        case 0x0d:
-        case 0x12: /* vertical display end */
-            s->cr[s->cr_index] = val;
-            break;
-        default:
-            s->cr[s->cr_index] = val;
-            break;
-        }
+        s->cr[s->cr_index] = val;
 
         switch(s->cr_index) {
         case 0x00: