diff --git a/master.cfg b/master.cfg
index f07dec6..b1899b2 100644
--- a/master.cfg
+++ b/master.cfg
@@ -598,7 +598,7 @@ all_gdb_filter = ChangeFilter (branch_fn = should_watch_branch)
 def DefaultGDBCanStartBuild (builder, buildslave, buildrequest):
     return not builder.building
 
-tests_accepted_re = re.compile ("(gdb/|bfd/|binutils/).*")
+files_ignored_re = re.compile ("(cpu/|elfcpp/|gas/|gold/|gprof/|ld/|sim/|texinfo/).*")
 
 def DefaultGDBfileIsImportant (change):
     """Implementation of fileIsImportant method, in order to decide which
@@ -607,7 +607,7 @@ changes to build on GDB."""
         return False
 
     for filename in change.files:
-        if re.match (tests_accepted_re, filename):
+        if not re.match (files_ignored_re, filename):
             return True
 
     return False