diff --git a/tools/build_board.py b/tools/build_board.py
index cf3a8fb9..464ee68c 100644
--- a/tools/build_board.py
+++ b/tools/build_board.py
@@ -44,7 +44,7 @@ filter_with_input(all_boards)
 all_boards.sort()
 
 def build_board(example, board):
-    global success_count, fail_count, skip_count
+    global success_count, fail_count, skip_count, exit_status
     start_time = time.monotonic()
     flash_size = "-"
     sram_size = "-"
diff --git a/tools/build_esp32s2.py b/tools/build_esp32s2.py
index cff0cc33..9823e8c5 100644
--- a/tools/build_esp32s2.py
+++ b/tools/build_esp32s2.py
@@ -42,7 +42,7 @@ filter_with_input(all_boards)
 all_boards.sort()
 
 def build_board(example, board):
-    global success_count, fail_count, skip_count
+    global success_count, fail_count, skip_count, exit_status
     start_time = time.monotonic()
     flash_size = "-"
     sram_size = "-"
diff --git a/tools/build_family.py b/tools/build_family.py
index 848996a3..ae1bf078 100644
--- a/tools/build_family.py
+++ b/tools/build_family.py
@@ -55,7 +55,7 @@ def build_family(example, family):
         build_board(example, board)
     
 def build_board(example, board):
-    global success_count, fail_count, skip_count
+    global success_count, fail_count, skip_count, exit_status
     start_time = time.monotonic()
     flash_size = "-"
     sram_size = "-"