diff --git a/src/posix/cocoa/i_video.mm b/src/posix/cocoa/i_video.mm
index 410a106f5..3fc2b2aed 100644
--- a/src/posix/cocoa/i_video.mm
+++ b/src/posix/cocoa/i_video.mm
@@ -342,17 +342,19 @@ VideoModes[] =
 	{ 1680, 1050 },	// 16:10
 	{ 1920, 1080 },
 	{ 1920, 1200 },
+	{ 2048, 1152 }, // 16:9, iMac Retina 4K 21.5", HiDPI off
 	{ 2048, 1536 },
-	{ 2304, 1440 },
+	{ 2304, 1440 }, // 16:10, MacBook Retina 12"
 	{ 2560, 1440 },
 	{ 2560, 1600 },
 	{ 2560, 2048 },
-	{ 2880, 1800 },
+	{ 2880, 1800 }, // 16:10, MacBook Pro Retina 15"
 	{ 3200, 1800 },
 	{ 3840, 2160 },
 	{ 3840, 2400 },
 	{ 4096, 2160 },
-	{ 5120, 2880 }
+	{ 4096, 2304 }, // 16:9, iMac Retina 4K 21.5"
+	{ 5120, 2880 }  // 16:9, iMac Retina 5K 27"
 };