diff --git a/video/out/opengl/lcms.c b/video/out/opengl/lcms.c
index ca4167d544..8747ae6aa6 100644
--- a/video/out/opengl/lcms.c
+++ b/video/out/opengl/lcms.c
@@ -370,7 +370,7 @@ bool gl_lcms_get_lut3d(struct gl_lcms *p, struct lut3d **result_lut3d,
         return false;
 
     void *tmp = talloc_new(NULL);
-    uint16_t *output = talloc_array(tmp, uint16_t, s_r * s_g * s_b * 3);
+    uint16_t *output = talloc_array(tmp, uint16_t, s_r * s_g * s_b * 4);
     struct lut3d *lut = NULL;
     cmsContext cms = NULL;
 
@@ -380,7 +380,7 @@ bool gl_lcms_get_lut3d(struct gl_lcms *p, struct lut3d **result_lut3d,
         // because we may change the parameter in the future or make it
         // customizable, same for the primaries.
         char *cache_info = talloc_asprintf(tmp,
-                "ver=1.3, intent=%d, size=%dx%dx%d, prim=%d, trc=%d, "
+                "ver=1.4, intent=%d, size=%dx%dx%d, prim=%d, trc=%d, "
                 "contrast=%d\n",
                 p->opts->intent, s_r, s_g, s_b, prim, trc, p->opts->contrast);
 
@@ -435,7 +435,7 @@ bool gl_lcms_get_lut3d(struct gl_lcms *p, struct lut3d **result_lut3d,
     }
 
     cmsHTRANSFORM trafo = cmsCreateTransformTHR(cms, vid_hprofile, TYPE_RGB_16,
-                                                profile, TYPE_RGB_16,
+                                                profile, TYPE_RGBA_16,
                                                 p->opts->intent,
                                                 cmsFLAGS_HIGHRESPRECALC |
                                                 cmsFLAGS_BLACKPOINTCOMPENSATION);
@@ -454,7 +454,7 @@ bool gl_lcms_get_lut3d(struct gl_lcms *p, struct lut3d **result_lut3d,
                 input[r * 3 + 1] = g * 65535 / (s_g - 1);
                 input[r * 3 + 2] = b * 65535 / (s_b - 1);
             }
-            size_t base = (b * s_r * s_g + g * s_r) * 3;
+            size_t base = (b * s_r * s_g + g * s_r) * 4;
             cmsDoTransform(trafo, input, output + base, s_r);
         }
     }
diff --git a/video/out/opengl/video.c b/video/out/opengl/video.c
index 09b05fd688..1378872838 100644
--- a/video/out/opengl/video.c
+++ b/video/out/opengl/video.c
@@ -569,10 +569,10 @@ static bool gl_video_get_lut3d(struct gl_video *p, enum mp_csp_prim prim,
 
     // GLES3 doesn't provide filtered 16 bit integer textures
     // GLES2 doesn't even provide 3D textures
-    const struct ra_format *fmt = ra_find_unorm_format(p->ra, 2, 3);
+    const struct ra_format *fmt = ra_find_unorm_format(p->ra, 2, 4);
     if (!fmt || !(p->ra->caps & RA_CAP_TEX_3D)) {
         p->use_lut_3d = false;
-        MP_WARN(p, "Disabling color management (no RGB16 3D textures).\n");
+        MP_WARN(p, "Disabling color management (no RGBA16 3D textures).\n");
         return false;
     }