diff --git a/taichi/ir/expr.cpp b/taichi/ir/expr.cpp
index 20ea0cd594fbe..552e029bcf6d4 100644
--- a/taichi/ir/expr.cpp
+++ b/taichi/ir/expr.cpp
@@ -179,9 +179,9 @@ Expr load(const Expr &ptr) {
 Expr ptr_if_global(const Expr &var) {
   if (var.is<GlobalVariableExpression>()) {
     // singleton global variable
-    TI_ASSERT_INFO(
-        var.snode()->num_active_indices == 0,
-        "Please always use 'x[None]' (instead of simply 'x') to access any 0-D tensor."
+    TI_ASSERT_INFO(var.snode()->num_active_indices == 0,
+                   "Please always use 'x[None]' (instead of simply 'x') to "
+                   "access any 0-D tensor.");
     return var[ExprGroup()];
   } else {
     // may be any local or global expr