diff --git a/src/video/vid_cga_toshiba_t3100e.c b/src/video/vid_cga_toshiba_t3100e.c
index 12ebcffa2..9f7c2f526 100644
--- a/src/video/vid_cga_toshiba_t3100e.c
+++ b/src/video/vid_cga_toshiba_t3100e.c
@@ -497,12 +497,12 @@ t3100e_poll(void *priv)
             }
 
             /* Graphics */
-            if (t3100e->cga.cgamode & 0x02) {
+            if (t3100e->cga.cgamode & CGA_MODE_FLAG_GRAPHICS) {
                 if (t3100e->cga.cgamode & CGA_MODE_FLAG_HIGHRES_GRAPHICS)
                     t3100e_cgaline6(t3100e);
                 else
                     t3100e_cgaline4(t3100e);
-            } else if (t3100e->cga.cgamode & 0x01) /* High-res text */
+            } else if (t3100e->cga.cgamode & CGA_MODE_FLAG_HIGHRES) /* High-res text */
             {
                 t3100e_text_row80(t3100e);
             } else {
@@ -550,7 +550,7 @@ t3100e_poll(void *priv)
             video_res_x = T3100E_XSIZE;
             video_res_y = T3100E_YSIZE;
 
-            if (t3100e->cga.cgamode & 0x02) {
+            if (t3100e->cga.cgamode & CGA_MODE_FLAG_GRAPHICS) {
                 if (t3100e->cga.cgamode & CGA_MODE_FLAG_HIGHRES_GRAPHICS)
                     video_bpp = 1;
                 else