diff --git a/arch/xtensa/core/xtensa_intgen.py b/arch/xtensa/core/xtensa_intgen.py
index 21dc4f1c46b..8736e500b7e 100755
--- a/arch/xtensa/core/xtensa_intgen.py
+++ b/arch/xtensa/core/xtensa_intgen.py
@@ -74,7 +74,7 @@ for match in re.finditer(r'__xtensa_int_level_magic__\s+(\d+)\s+(\d+)', blob):
     irq = int(match.group(1))
     lvl = int(match.group(2))
 
-    if not lvl in ints_by_lvl:
+    if lvl not in ints_by_lvl:
         ints_by_lvl[lvl] = []
 
     ints_by_lvl[lvl].append(irq)