diff --git a/scripts/native_heapdump_viewer_tests.py b/scripts/native_heapdump_viewer_tests.py
index 867f0fbd9..1b30c2352 100755
--- a/scripts/native_heapdump_viewer_tests.py
+++ b/scripts/native_heapdump_viewer_tests.py
@@ -108,7 +108,7 @@ z 0  sz   8300  num    5  bt 1300 2300 3300
 
   def test_backtrace_num_field_valid(self):
     heap = self.CreateTmpFile(self._backtrace_data)
-    backtraces, mapppings = native_heapdump_viewer.ParseNativeHeap(heap, False, True)
+    backtraces, mapppings = native_heapdump_viewer.ParseNativeHeap(heap, False, True, "")
     self.assertTrue(backtraces)
     self.assertEqual(2, len(backtraces))
 
@@ -124,7 +124,7 @@ z 0  sz   8300  num    5  bt 1300 2300 3300
 
   def test_backtrace_num_field_invalid(self):
     heap = self.CreateTmpFile(self._backtrace_data)
-    backtraces, mapppings = native_heapdump_viewer.ParseNativeHeap(heap, False, False)
+    backtraces, mapppings = native_heapdump_viewer.ParseNativeHeap(heap, False, False, "")
     self.assertTrue(backtraces)
     self.assertEqual(2, len(backtraces))
 
@@ -140,7 +140,7 @@ z 0  sz   8300  num    5  bt 1300 2300 3300
 
   def test_backtrace_reverse_field_valid(self):
     heap = self.CreateTmpFile(self._backtrace_data)
-    backtraces, mapppings = native_heapdump_viewer.ParseNativeHeap(heap, True, True)
+    backtraces, mapppings = native_heapdump_viewer.ParseNativeHeap(heap, True, True, "")
     self.assertTrue(backtraces)
     self.assertEqual(2, len(backtraces))
 
@@ -164,7 +164,7 @@ END
 """
 
     heap = self.CreateTmpFile(map_data)
-    backtraces, mappings = native_heapdump_viewer.ParseNativeHeap(heap, True, True)
+    backtraces, mappings = native_heapdump_viewer.ParseNativeHeap(heap, True, True, "")
 
     self.assertTrue(mappings)
     self.assertEqual(2, len(mappings))