diff --git a/Makefile b/Makefile
index b02b705909..13ab5d1b09 100644
--- a/Makefile
+++ b/Makefile
@@ -187,6 +187,8 @@ check:
 	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Mods.Common
 	@echo "Checking for code style violations in OpenRA.Mods.Cnc..."
 	@mono --debug OpenRA.Utility.exe cnc --check-code-style OpenRA.Mods.Cnc
+	@echo "Checking for code style violations in OpenRA.Mods.D2k..."
+	@mono --debug OpenRA.Utility.exe cnc --check-code-style OpenRA.Mods.D2k
 	@echo "Checking for code style violations in OpenRA.Mods.TS..."
 	@mono --debug OpenRA.Utility.exe cnc --check-code-style OpenRA.Mods.TS