1 files changed, 3 insertions, 0 deletions
diff --git a/ghc.mk b/ghc.mk
index b2be25221f..595356a93b 100644
--- a/ghc.mk
+++ b/ghc.mk
@@ -1327,6 +1327,9 @@ clean_bindistprep:
 	$(call removeTrees,bindistprep/)
 
 distclean : clean
+# Clean the files that ./validate creates.
+	$(call removeFiles,mk/are-validating.mk)
+
 # Clean the files that we ask ./configure to create.
 	$(call removeFiles,mk/config.mk)
 	$(call removeFiles,mk/install.mk)