diff --git a/GNUmakefile b/GNUmakefile
index e4e382bf..f852d29e 100755
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -684,8 +684,8 @@ clean:
 	-$(RM) adhoc.cpp.o adhoc.cpp.proto.o $(LIBOBJS) rdrand-*.o $(TESTOBJS) $(DLLOBJS) $(LIBIMPORTOBJS) $(TESTIMPORTOBJS) $(DLLTESTOBJS)
 	@-$(RM) libcryptopp.a libcryptopp.dylib cryptopp.dll libcryptopp.dll.a libcryptopp.import.a
 	@-$(RM) libcryptopp.so libcryptopp.so$(SOLIB_COMPAT_SUFFIX) libcryptopp.so$(SOLIB_VERSION_SUFFIX)
-	@-$(RM) cryptest.exe dlltest.exe cryptest.import.exe cryptest.info ct
-	@-$(RM) *.gcov *.gcno *.gcda *.stackdump core-*
+	@-$(RM) cryptest.exe dlltest.exe cryptest.import.exe cryptest.info ct et
+	@-$(RM) *.gcov *.gcno *.gcda *.stackdump core core-*
 	@-$(RM) /tmp/adhoc.exe
 	@-$(RM) -r /tmp/cryptopp_test/
 	@-$(RM) -r *.exe.dSYM/