diff --git a/src/test/ui/const-generics/const-argument-cross-crate-mismatch.full.stderr b/src/test/ui/const-generics/const-argument-cross-crate-mismatch.full.stderr
index a35c3abc113b9..6ef698bd6a04f 100644
--- a/src/test/ui/const-generics/const-argument-cross-crate-mismatch.full.stderr
+++ b/src/test/ui/const-generics/const-argument-cross-crate-mismatch.full.stderr
@@ -1,11 +1,11 @@
 error[E0308]: mismatched types
-  --> $DIR/const-argument-cross-crate-mismatch.rs:7:67
+  --> $DIR/const-argument-cross-crate-mismatch.rs:9:67
    |
 LL |     let _ = const_generic_lib::function(const_generic_lib::Struct([0u8, 1u8]));
    |                                                                   ^^^^^^^^^^ expected an array with a fixed size of 3 elements, found one with 2 elements
 
 error[E0308]: mismatched types
-  --> $DIR/const-argument-cross-crate-mismatch.rs:9:65
+  --> $DIR/const-argument-cross-crate-mismatch.rs:11:65
    |
 LL |     let _: const_generic_lib::Alias = const_generic_lib::Struct([0u8, 1u8, 2u8]);
    |                                                                 ^^^^^^^^^^^^^^^ expected an array with a fixed size of 2 elements, found one with 3 elements
diff --git a/src/test/ui/const-generics/const-argument-cross-crate-mismatch.min.stderr b/src/test/ui/const-generics/const-argument-cross-crate-mismatch.min.stderr
index a35c3abc113b9..6ef698bd6a04f 100644
--- a/src/test/ui/const-generics/const-argument-cross-crate-mismatch.min.stderr
+++ b/src/test/ui/const-generics/const-argument-cross-crate-mismatch.min.stderr
@@ -1,11 +1,11 @@
 error[E0308]: mismatched types
-  --> $DIR/const-argument-cross-crate-mismatch.rs:7:67
+  --> $DIR/const-argument-cross-crate-mismatch.rs:9:67
    |
 LL |     let _ = const_generic_lib::function(const_generic_lib::Struct([0u8, 1u8]));
    |                                                                   ^^^^^^^^^^ expected an array with a fixed size of 3 elements, found one with 2 elements
 
 error[E0308]: mismatched types
-  --> $DIR/const-argument-cross-crate-mismatch.rs:9:65
+  --> $DIR/const-argument-cross-crate-mismatch.rs:11:65
    |
 LL |     let _: const_generic_lib::Alias = const_generic_lib::Struct([0u8, 1u8, 2u8]);
    |                                                                 ^^^^^^^^^^^^^^^ expected an array with a fixed size of 2 elements, found one with 3 elements
diff --git a/src/test/ui/const-generics/const-argument-cross-crate-mismatch.rs b/src/test/ui/const-generics/const-argument-cross-crate-mismatch.rs
index 9ae2ae50ba0ab..a8f533eceaa6d 100644
--- a/src/test/ui/const-generics/const-argument-cross-crate-mismatch.rs
+++ b/src/test/ui/const-generics/const-argument-cross-crate-mismatch.rs
@@ -1,5 +1,7 @@
 // aux-build:const_generic_lib.rs
 // revisions: full min
+#![cfg_attr(full, feature(const_generics))]
+#![cfg_attr(full, allow(incomplete_features))]
 
 extern crate const_generic_lib;