delete the correct thing; kexfuzz binary
diff --git a/Makefile.in b/Makefile.in
index 2385c62..126b2c7 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -280,7 +280,7 @@
 	rm -f regress/unittests/utf8/*.o
 	rm -f regress/unittests/utf8/test_utf8
 	rm -f regress/misc/kexfuzz/*.o
-	rm -f regress/misc/kexfuzz
+	rm -f regress/misc/kexfuzz/kexfuzz$(EXEEXT)
 	(cd openbsd-compat && $(MAKE) distclean)
 	if test -d pkg ; then \
 		rm -fr pkg ; \