diff --git a/config/find_OOM_errors.py b/config/find_OOM_errors.py
index 090c9b33e70..1d9f4437ee4 100644
--- a/config/find_OOM_errors.py
+++ b/config/find_OOM_errors.py
@@ -229,6 +229,8 @@ for f in files:
 
     if OPTIONS.regression == None:
       print "Testing allocation %d/%d in %s" % (i,max,f)
+    else:
+      sys.stdout.write('.') # something short for tinderbox, no space or \n
 
     command = (command_template + ' -A %d') % (f, i)
     out, err, exit = run(command)
@@ -317,6 +319,7 @@ for f in files:
   if not OPTIONS.regression == None:
     count_lines()
 
+print '\n',
 
 # Do the actual regression check
 if OPTIONS.regression:
diff --git a/js/src/Makefile.in b/js/src/Makefile.in
index 1ba0c7dab1b..4026cee1d0f 100644
--- a/js/src/Makefile.in
+++ b/js/src/Makefile.in
@@ -606,7 +606,7 @@ endif
 check-ooms:
 	$(wildcard $(RUN_TEST_PROGRAM)) $(PYTHON) -u $(srcdir)/config/find_OOM_errors.py --regression 125
 
-ifdef DEBUG
+ifeq ($(MOZ_DEBUG),1)
 check:: check-ooms
 endif
 
diff --git a/js/src/config/find_OOM_errors.py b/js/src/config/find_OOM_errors.py
index 090c9b33e70..1d9f4437ee4 100644
--- a/js/src/config/find_OOM_errors.py
+++ b/js/src/config/find_OOM_errors.py
@@ -229,6 +229,8 @@ for f in files:
 
     if OPTIONS.regression == None:
       print "Testing allocation %d/%d in %s" % (i,max,f)
+    else:
+      sys.stdout.write('.') # something short for tinderbox, no space or \n
 
     command = (command_template + ' -A %d') % (f, i)
     out, err, exit = run(command)
@@ -317,6 +319,7 @@ for f in files:
   if not OPTIONS.regression == None:
     count_lines()
 
+print '\n',
 
 # Do the actual regression check
 if OPTIONS.regression: