diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.c b/hw/xfree86/drivers/modesetting/drmmode_display.c
index 1c1d79f30..5c8b47b53 100644
--- a/hw/xfree86/drivers/modesetting/drmmode_display.c
+++ b/hw/xfree86/drivers/modesetting/drmmode_display.c
@@ -4132,13 +4132,13 @@ drmmode_crtc_upgrade_lut(xf86CrtcPtr crtc, int num)
             crtc->gamma_blue = gamma + size * 2;
 
             xf86DrvMsgVerb(pScrn->scrnIndex, X_INFO, MS_LOGLEVEL_DEBUG,
-                           "Gamma ramp set to %ld entries on CRTC %d\n",
-                           size, num);
+                           "Gamma ramp set to %lld entries on CRTC %d\n",
+                           (long long)size, num);
         } else {
             xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
-                       "Failed to allocate memory for %ld gamma ramp entries "
+                       "Failed to allocate memory for %lld gamma ramp entries "
                        "on CRTC %d.\n",
-                       size, num);
+                       (long long)size, num);
             return FALSE;
         }
     }