diff --git a/libs/stino_runtime/__init__.py b/libs/stino_runtime/__init__.py
index 85f14f6..9892710 100644
--- a/libs/stino_runtime/__init__.py
+++ b/libs/stino_runtime/__init__.py
@@ -1825,7 +1825,7 @@ def run_build_commands(cmds, msgs):
     """."""
     is_ok = True
     n = 0
-
+    percent = 0
     non_blank_msgs = [m for m in msgs if m]
     total = len(non_blank_msgs)
     for cmd, msg in zip(cmds, msgs):