diff --git a/prwtmp/GNUmakefile b/prwtmp/GNUmakefile
index dbcf70e..259f83f 100644
--- a/prwtmp/GNUmakefile
+++ b/prwtmp/GNUmakefile
@@ -20,3 +20,6 @@ $(ROOT)/usr/local/man/man8/%.8: %.man
 
 clean:
 	rm prwtmp
+
+distclean: clean
+	rm GNUmakerules GNUmakevars
diff --git a/time_t/GNUmakefile b/time_t/GNUmakefile
index 0fac7f0..c9cfc71 100644
--- a/time_t/GNUmakefile
+++ b/time_t/GNUmakefile
@@ -5,6 +5,9 @@ all: time_t
 time_t:
 clean:
 	rm time_t
+
+distclean: clean
+	rm GNUmakevars GNUmakerules
 install: $(BINDIR)/time_t
 
 GNUmakevars: GNUmakevars.sh