diff --git a/python/taichi/lang/matrix.py b/python/taichi/lang/matrix.py
index d3de02f9c4cbd..d94d4e8129df3 100644
--- a/python/taichi/lang/matrix.py
+++ b/python/taichi/lang/matrix.py
@@ -422,7 +422,9 @@ def cast(self, dtype):
 
         """
         _taichi_skip_traceback = 1
-        return Matrix([[ops_mod.cast(self(i, j), dtype) for j in range(self.m)] for i in range(self.n)])
+        return Matrix(
+            [[ops_mod.cast(self(i, j), dtype) for j in range(self.m)]
+             for i in range(self.n)])
 
     def trace(self):
         """The sum of a matrix diagonal elements.
diff --git a/taichi/ir/frontend_ir.h b/taichi/ir/frontend_ir.h
index 35f0ea9643e2f..b686bcc8d0f8d 100644
--- a/taichi/ir/frontend_ir.h
+++ b/taichi/ir/frontend_ir.h
@@ -584,7 +584,10 @@ class RangeAssumptionExpression : public Expression {
                             const Expr &base,
                             int low,
                             int high)
-      : input(load_if_ptr(input)), base(load_if_ptr(base)), low(low), high(high) {
+      : input(load_if_ptr(input)),
+        base(load_if_ptr(base)),
+        low(low),
+        high(high) {
   }
 
   void type_check() override;