diff --git a/scripts/gdb/linux/stackdepot.py b/scripts/gdb/linux/stackdepot.py
index 37313a5a51a0..aaa18af25cd1 100644
--- a/scripts/gdb/linux/stackdepot.py
+++ b/scripts/gdb/linux/stackdepot.py
@@ -39,7 +39,7 @@ def stack_depot_fetch(handle):
 
     pool_index = parts['pool_index_plus_1'] - 1
     if pool_index >= pools_num:
-        gdb.write("pool index %d out of bounds (%d) for stack id 0x%08x\n" % (parts['pool_index'], pools_num, handle))
+        gdb.write("pool index %d out of bounds (%d) for stack id 0x%08x\n" % (pool_index, pools_num, handle))
         return gdb.Value(0), 0
 
     stack_pools = gdb.parse_and_eval('stack_pools')