diff --git a/Tools/scripts/size_compare_branches.py b/Tools/scripts/size_compare_branches.py
index 78101195f7..7ecfb9ac32 100755
--- a/Tools/scripts/size_compare_branches.py
+++ b/Tools/scripts/size_compare_branches.py
@@ -36,10 +36,11 @@ else:
 class SizeCompareBranchesResult(object):
     '''object to return results from a comparison'''
 
-    def __init__(self, board, vehicle, bytes_delta):
+    def __init__(self, board, vehicle, bytes_delta, identical):
         self.board = board
         self.vehicle = vehicle
         self.bytes_delta = bytes_delta
+        self.identical = identical
 
 
 class SizeCompareBranches(object):
@@ -268,7 +269,10 @@ class SizeCompareBranches(object):
                 bytes_delta = ""
                 if vehicle in board_results:
                     result = board_results[vehicle]
-                    bytes_delta = result.bytes_delta
+                    if result.identical:
+                        bytes_delta = "*"
+                    else:
+                        bytes_delta = result.bytes_delta
                 line.append(str(bytes_delta))
             ret += ",".join(line) + "\n"
         return ret
@@ -277,6 +281,10 @@ class SizeCompareBranches(object):
         results = self.run_all()
         self.emit_csv_for_results(results)
 
+    def files_are_identical(self, file1, file2):
+        '''returns true if the files have the same content'''
+        return open(file1, "rb").read() == open(file2, "rb").read()
+
     def run_board(self, board):
         ret = {}
         board_info = self.boards_by_name[board]
@@ -341,13 +349,19 @@ class SizeCompareBranches(object):
                 self.run_program("SCB", elf_diff_commandline)
 
             try:
-                master_size = os.path.getsize(os.path.join(master_bin_dir, bin_filename))
-                new_size = os.path.getsize(os.path.join(new_bin_dir, bin_filename))
+                master_path = os.path.join(master_bin_dir, bin_filename)
+                new_path = os.path.join(new_bin_dir, bin_filename)
+                master_size = os.path.getsize(master_path)
+                new_size = os.path.getsize(new_path)
             except FileNotFoundError:
-                master_size = os.path.getsize(os.path.join(master_bin_dir, elf_filename))
-                new_size = os.path.getsize(os.path.join(new_bin_dir, elf_filename))
+                master_path = os.path.join(master_bin_dir, elf_filename)
+                new_path = os.path.join(new_bin_dir, elf_filename)
+                master_size = os.path.getsize(master_path)
+                new_size = os.path.getsize(new_path)
 
-            ret[vehicle] = SizeCompareBranchesResult(board, vehicle, new_size - master_size)
+            identical = self.files_are_identical(master_path, new_path)
+
+            ret[vehicle] = SizeCompareBranchesResult(board, vehicle, new_size - master_size, identical)
 
         return ret