diff --git a/src/test/ui/const-generics/uninferred-consts-during-codegen-1.rs b/src/test/ui/const-generics/uninferred-consts-during-codegen-1.rs
index 2e555d11abab..1e064fbd9706 100644
--- a/src/test/ui/const-generics/uninferred-consts-during-codegen-1.rs
+++ b/src/test/ui/const-generics/uninferred-consts-during-codegen-1.rs
@@ -14,5 +14,5 @@ impl<T: fmt::Debug, const N: usize> fmt::Debug for Array<T, {N}> {
 }
 
 fn main() {
-    println!("{:?}", Array([1, 2, 3]));
+    assert_eq!(format!("{:?}", Array([1, 2, 3])), "[1, 2, 3]");
 }
diff --git a/src/test/ui/const-generics/uninferred-consts-during-codegen-2.rs b/src/test/ui/const-generics/uninferred-consts-during-codegen-2.rs
index 7a1a4f49794d..0cf505906f62 100644
--- a/src/test/ui/const-generics/uninferred-consts-during-codegen-2.rs
+++ b/src/test/ui/const-generics/uninferred-consts-during-codegen-2.rs
@@ -14,5 +14,5 @@ impl<T: fmt::Debug, const N: usize> fmt::Debug for Array<[T; N]> {
 }
 
 fn main() {
-    println!("{:?}", Array([1, 2, 3]));
+    assert_eq!(format!("{:?}", Array([1, 2, 3])), "[1, 2, 3]");
 }