diff --git a/tests/ui/box_default.fixed b/tests/ui/box_default.fixed
index 6afce208769..e6331290420 100644
--- a/tests/ui/box_default.fixed
+++ b/tests/ui/box_default.fixed
@@ -1,5 +1,6 @@
 //@run-rustfix
 #![warn(clippy::box_default)]
+#![allow(clippy::default_constructed_unit_structs)]
 
 #[derive(Default)]
 struct ImplementsDefault;
diff --git a/tests/ui/box_default.rs b/tests/ui/box_default.rs
index 09365618e63..34a05a29c5a 100644
--- a/tests/ui/box_default.rs
+++ b/tests/ui/box_default.rs
@@ -1,5 +1,6 @@
 //@run-rustfix
 #![warn(clippy::box_default)]
+#![allow(clippy::default_constructed_unit_structs)]
 
 #[derive(Default)]
 struct ImplementsDefault;
diff --git a/tests/ui/box_default.stderr b/tests/ui/box_default.stderr
index 78e17b9f035..c9834863601 100644
--- a/tests/ui/box_default.stderr
+++ b/tests/ui/box_default.stderr
@@ -1,5 +1,5 @@
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:22:32
+  --> $DIR/box_default.rs:23:32
    |
 LL |     let _string: Box<String> = Box::new(Default::default());
    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::default()`
@@ -7,91 +7,91 @@ LL |     let _string: Box<String> = Box::new(Default::default());
    = note: `-D clippy::box-default` implied by `-D warnings`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:23:17
+  --> $DIR/box_default.rs:24:17
    |
 LL |     let _byte = Box::new(u8::default());
    |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<u8>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:24:16
+  --> $DIR/box_default.rs:25:16
    |
 LL |     let _vec = Box::new(Vec::<u8>::new());
    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<Vec<u8>>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:25:17
+  --> $DIR/box_default.rs:26:17
    |
 LL |     let _impl = Box::new(ImplementsDefault::default());
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<ImplementsDefault>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:26:18
+  --> $DIR/box_default.rs:27:18
    |
 LL |     let _impl2 = Box::new(<ImplementsDefault as Default>::default());
    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<ImplementsDefault>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:27:42
+  --> $DIR/box_default.rs:28:42
    |
 LL |     let _impl3: Box<ImplementsDefault> = Box::new(Default::default());
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:29:28
+  --> $DIR/box_default.rs:30:28
    |
 LL |     let _in_macro = outer!(Box::new(String::new()));
    |                            ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<String>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:30:34
+  --> $DIR/box_default.rs:31:34
    |
 LL |     let _string_default = outer!(Box::new(String::from("")));
    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<String>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:31:46
+  --> $DIR/box_default.rs:32:46
    |
 LL |     let _vec2: Box<Vec<ImplementsDefault>> = Box::new(vec![]);
    |                                              ^^^^^^^^^^^^^^^^ help: try: `Box::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:32:33
+  --> $DIR/box_default.rs:33:33
    |
 LL |     let _vec3: Box<Vec<bool>> = Box::new(Vec::from([]));
    |                                 ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:33:25
+  --> $DIR/box_default.rs:34:25
    |
 LL |     let _vec4: Box<_> = Box::new(Vec::from([false; 0]));
    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<Vec<bool>>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:35:16
+  --> $DIR/box_default.rs:36:16
    |
 LL |     call_ty_fn(Box::new(u8::default()));
    |                ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:40:5
+  --> $DIR/box_default.rs:41:5
    |
 LL |     Box::new(bool::default())
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<bool>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:57:28
+  --> $DIR/box_default.rs:58:28
    |
 LL |     let _: Box<dyn Read> = Box::new(ImplementsDefault::default());
    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<ImplementsDefault>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:66:17
+  --> $DIR/box_default.rs:67:17
    |
 LL |         let _ = Box::new(WeirdPathed::default());
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<WeirdPathed>::default()`
 
 error: `Box::new(_)` of default value
-  --> $DIR/box_default.rs:78:18
+  --> $DIR/box_default.rs:79:18
    |
 LL |             Some(Box::new(Foo::default()))
    |                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<Foo>::default()`
diff --git a/tests/ui/from_over_into.fixed b/tests/ui/from_over_into.fixed
index fc6d937060d..d18f9387565 100644
--- a/tests/ui/from_over_into.fixed
+++ b/tests/ui/from_over_into.fixed
@@ -32,7 +32,7 @@ struct SelfKeywords;
 
 impl From<X> for SelfKeywords {
     fn from(val: X) -> Self {
-        let _ = X::default();
+        let _ = X;
         let _ = X::FOO;
         let _: X = val;
 
diff --git a/tests/ui/from_over_into.rs b/tests/ui/from_over_into.rs
index fe1ebee35f1..de8ff0b06bd 100644
--- a/tests/ui/from_over_into.rs
+++ b/tests/ui/from_over_into.rs
@@ -32,7 +32,7 @@ struct SelfKeywords;
 
 impl Into<SelfKeywords> for X {
     fn into(self) -> SelfKeywords {
-        let _ = Self::default();
+        let _ = Self;
         let _ = Self::FOO;
         let _: Self = self;
 
diff --git a/tests/ui/from_over_into.stderr b/tests/ui/from_over_into.stderr
index 990b905c1b1..6039f86fe67 100644
--- a/tests/ui/from_over_into.stderr
+++ b/tests/ui/from_over_into.stderr
@@ -35,7 +35,7 @@ help: replace the `Into` implementation with `From<X>`
    |
 LL ~ impl From<X> for SelfKeywords {
 LL ~     fn from(val: X) -> Self {
-LL ~         let _ = X::default();
+LL ~         let _ = X;
 LL ~         let _ = X::FOO;
 LL ~         let _: X = val;
    |
diff --git a/tests/ui/use_self_trait.fixed b/tests/ui/use_self_trait.fixed
index 4623aeeb0eb..20138a29fd1 100644
--- a/tests/ui/use_self_trait.fixed
+++ b/tests/ui/use_self_trait.fixed
@@ -33,7 +33,7 @@ impl SelfTrait for Bad {
     fn nested(_p1: Box<Self>, _p2: (&u8, &Self)) {}
 
     fn vals(_: Self) -> Self {
-        Self::default()
+        Self
     }
 }
 
@@ -70,7 +70,7 @@ impl SelfTrait for Good {
     fn nested(_p1: Box<Self>, _p2: (&u8, &Self)) {}
 
     fn vals(_: Self) -> Self {
-        Self::default()
+        Self
     }
 }
 
diff --git a/tests/ui/use_self_trait.rs b/tests/ui/use_self_trait.rs
index d7d76dd9623..bf697b01a42 100644
--- a/tests/ui/use_self_trait.rs
+++ b/tests/ui/use_self_trait.rs
@@ -33,7 +33,7 @@ impl SelfTrait for Bad {
     fn nested(_p1: Box<Bad>, _p2: (&u8, &Bad)) {}
 
     fn vals(_: Bad) -> Bad {
-        Bad::default()
+        Bad
     }
 }
 
@@ -70,7 +70,7 @@ impl SelfTrait for Good {
     fn nested(_p1: Box<Self>, _p2: (&u8, &Self)) {}
 
     fn vals(_: Self) -> Self {
-        Self::default()
+        Self
     }
 }
 
diff --git a/tests/ui/use_self_trait.stderr b/tests/ui/use_self_trait.stderr
index 090729b9c3d..6257f802dd8 100644
--- a/tests/ui/use_self_trait.stderr
+++ b/tests/ui/use_self_trait.stderr
@@ -63,7 +63,7 @@ LL |     fn vals(_: Bad) -> Bad {
 error: unnecessary structure name repetition
   --> $DIR/use_self_trait.rs:36:9
    |
-LL |         Bad::default()
+LL |         Bad
    |         ^^^ help: use the applicable keyword: `Self`
 
 error: unnecessary structure name repetition