diff --git a/tests/mir-opt/const_prop/read_immutable_static.rs b/tests/mir-opt/const_prop/read_immutable_static.rs
index a8d8cfacc7c..0fa18dd101a 100644
--- a/tests/mir-opt/const_prop/read_immutable_static.rs
+++ b/tests/mir-opt/const_prop/read_immutable_static.rs
@@ -1,9 +1,11 @@
-// skip-filecheck
 // unit-test: ConstProp
 
 static FOO: u8 = 2;
 
 // EMIT_MIR read_immutable_static.main.ConstProp.diff
 fn main() {
+    // CHECK-LABEL: fn main(
+    // CHECK: debug x => [[x:_.*]];
+    // CHECK: [[x]] = const 4_u8;
     let x = FOO + FOO;
 }