diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 8a704cddc4..0b2c98e39a 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-07-21  Matt Rice  <ratmice@gmail.com>
+
+	* gdb.threads/Makefile.in: Avoid globbing corethreads.exp
+	in mostlyclean rule.  Add files ending in .core.
+
 2011-07-21  Matt Rice  <ratmice@gmail.com>
 
 	PR macros/12999
diff --git a/gdb/testsuite/gdb.threads/Makefile.in b/gdb/testsuite/gdb.threads/Makefile.in
index df70a511c5..954d547cf6 100644
--- a/gdb/testsuite/gdb.threads/Makefile.in
+++ b/gdb/testsuite/gdb.threads/Makefile.in
@@ -16,7 +16,8 @@ all info install-info dvi install uninstall installcheck check:
 	@echo "Nothing to be done for $@..."
 
 clean mostlyclean:
-	-rm -f *~ *.o a.out xgdb *.x *.ci *.tmp core* $(EXECUTABLES) gcore.test
+	-rm -f *~ *.o a.out xgdb *.x *.ci *.tmp core core.* $(EXECUTABLES) \
+	 *.core gcore.test
 
 distclean maintainer-clean realclean: clean
 	-rm -f Makefile config.status config.log config.h gdb.log gdb.sum