--- b/bhyve/pci_fbuf.c	
+++ b/bhyve/pci_fbuf.c	
@@ -163,13 +163,13 @@ pci_fbuf_write(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
                break;
        }
-       if (!sc->gc_image->vgamode && sc->memregs.width == 0 &&
+       if (sc->gc_image && !sc->gc_image->vgamode && sc->memregs.width == 0 &&
            sc->memregs.height == 0) {
                DPRINTF(DEBUG_INFO, ("switching to VGA mode\r\n"));
                sc->gc_image->vgamode = 1;
                sc->gc_width = 0;
                sc->gc_height = 0;
-       } else if (sc->gc_image->vgamode && sc->memregs.width != 0 &&
+       } else if (sc->gc_image && sc->gc_image->vgamode && sc->memregs.width != 0 &&
            sc->memregs.height != 0) {
                DPRINTF(DEBUG_INFO, ("switching to VESA mode\r\n"));
                sc->gc_image->vgamode = 0;