diff --git a/Makefile b/Makefile
index ddc7f0c5b8..72c9593938 100644
--- a/Makefile
+++ b/Makefile
@@ -180,6 +180,7 @@ clean::
 	$(RM) $(CLEANSUFFIXES)
 	$(RM) $(CLEANSUFFIXES:%=tools/%)
 	$(RM) $(CLEANSUFFIXES:%=compat/msvcrt/%)
+	$(RM) $(CLEANSUFFIXES:%=compat/atomics/pthread/%)
 	$(RM) $(CLEANSUFFIXES:%=compat/%)
 	$(RM) -r coverage-html
 	$(RM) -rf coverage.info coverage.info.in lcov