diff --git a/src/video/vid_cl54xx.c b/src/video/vid_cl54xx.c
index 6b7223761..8f145fc56 100644
--- a/src/video/vid_cl54xx.c
+++ b/src/video/vid_cl54xx.c
@@ -894,10 +894,12 @@ gd54xx_out(uint16_t addr, uint8_t val, void *p)
                             svga->gdcreg[5] &= ~0x04;
                             svga->writemode = svga->gdcreg[5] & 3;
                             svga->adv_flags &= (FLAG_EXTRA_BANKS | FLAG_ADDR_BY8 | FLAG_LATCH8);
-                            svga->gdcreg[0] &= 0x0f;
-                            gd543x_mmio_write(0xb8000, svga->gdcreg[0], gd54xx);
-                            svga->gdcreg[1] &= 0x0f;
-                            gd543x_mmio_write(0xb8004, svga->gdcreg[1], gd54xx);
+                            if (svga->crtc[0x27] != CIRRUS_ID_CLGD5436) {
+                                svga->gdcreg[0] &= 0x0f;
+                                gd543x_mmio_write(0xb8000, svga->gdcreg[0], gd54xx);
+                                svga->gdcreg[1] &= 0x0f;
+                                gd543x_mmio_write(0xb8004, svga->gdcreg[1], gd54xx);
+                            }
                             svga->seqregs[2] &= 0x0f;
                         }
                     case 0x09: