diff --git a/pkg/ctr/Makefile.cores b/pkg/ctr/Makefile.cores
index d7567039fc..972397bb0e 100644
--- a/pkg/ctr/Makefile.cores
+++ b/pkg/ctr/Makefile.cores
@@ -5,6 +5,14 @@ ifeq ($(LIBRETRO), 2048)
 	APP_ICON             = pkg/ctr/assets/2048.png
 	APP_BANNER           = pkg/ctr/assets/2048_banner.png
 
+else ifeq ($(LIBRETRO), 4do)
+	APP_TITLE            = 4DO
+	APP_AUTHOR           = various
+	APP_PRODUCT_CODE     = RARCH-4DO
+	APP_UNIQUE_ID        = 0xBAC91
+	APP_ICON             = pkg/ctr/assets/4do.png
+	APP_BANNER           = pkg/ctr/assets/4do_banner.png
+
 else ifeq ($(LIBRETRO), 81)
 	APP_TITLE            = lr-81
 	APP_AUTHOR           = various