diff --git a/clippy_lints/src/undocumented_unsafe_blocks.rs b/clippy_lints/src/undocumented_unsafe_blocks.rs
index c886faf5d28..ccc49caf47c 100644
--- a/clippy_lints/src/undocumented_unsafe_blocks.rs
+++ b/clippy_lints/src/undocumented_unsafe_blocks.rs
@@ -137,10 +137,10 @@ impl UndocumentedUnsafeBlocks {
 
         let between_span = if block_span.from_expansion() {
             self.macro_expansion = true;
-            enclosing_scope_span.with_hi(block_span.hi())
+            enclosing_scope_span.with_hi(block_span.hi()).source_callsite()
         } else {
             self.macro_expansion = false;
-            enclosing_scope_span.to(block_span)
+            enclosing_scope_span.to(block_span).source_callsite()
         };
 
         let file_name = source_map.span_to_filename(between_span);
diff --git a/tests/ui/undocumented_unsafe_blocks.rs b/tests/ui/undocumented_unsafe_blocks.rs
index 52577323a58..7e510d89475 100644
--- a/tests/ui/undocumented_unsafe_blocks.rs
+++ b/tests/ui/undocumented_unsafe_blocks.rs
@@ -284,4 +284,8 @@ fn interference() {
     unsafe {};
 }
 
+pub fn print_binary_tree() {
+    println!("{}", unsafe { String::from_utf8_unchecked(vec![]) });
+}
+
 fn main() {}
diff --git a/tests/ui/undocumented_unsafe_blocks.stderr b/tests/ui/undocumented_unsafe_blocks.stderr
index 613e9ffca45..ebe589001a1 100644
--- a/tests/ui/undocumented_unsafe_blocks.stderr
+++ b/tests/ui/undocumented_unsafe_blocks.stderr
@@ -155,5 +155,17 @@ LL ~     // Safety: ...
 LL ~     unsafe {};
    |
 
-error: aborting due to 13 previous errors
+error: unsafe block missing a safety comment
+  --> $DIR/undocumented_unsafe_blocks.rs:288:20
+   |
+LL |     println!("{}", unsafe { String::from_utf8_unchecked(vec![]) });
+   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: consider adding a safety comment
+   |
+LL ~     println!("{}", // Safety: ...
+LL ~     unsafe { String::from_utf8_unchecked(vec![]) });
+   |
+
+error: aborting due to 14 previous errors