diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f11655e8f..ae5e9a1e37 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -67,6 +67,7 @@ You can find its changes [documented below](#070---2021-01-01).
 - `Notification`s will not be delivered to the widget that sends them ([#1640] by [@cmyr])
 - `TextBox` can handle standard keyboard shortcuts without needing menus ([#1660] by [@cmyr])
 - GTK Shell: Prevent mangling of newline characters in clipboard ([#1695] by [@ForLoveOfCats])
+- GTK: Replaced call to `std::str::from_utf8_unchecked` with `from_utf8` ([#1820] by [@psychon])
 - Use correct fill rule when rendering SVG paths ([#1606] by [@SecondFlight])
 - Correctly capture and use stroke properties when rendering SVG paths ([#1647] by [@SecondFlight])
 - focus-chain now only includes non hidden (`should_propagate_to_hidden()` on `Event` and `Lifecylce`) widgets ([#1724] by [@xarvic])
@@ -726,6 +727,7 @@ Last release without a changelog :(
 [#1772]: https://github.com/linebender/druid/pull/1772
 [#1787]: https://github.com/linebender/druid/pull/1787
 [#1802]: https://github.com/linebender/druid/pull/1802
+[#1820]: https://github.com/linebender/druid/pull/1820
 
 [Unreleased]: https://github.com/linebender/druid/compare/v0.7.0...master
 [0.7.0]: https://github.com/linebender/druid/compare/v0.6.0...v0.7.0
diff --git a/druid-shell/src/platform/gtk/clipboard.rs b/druid-shell/src/platform/gtk/clipboard.rs
index 1bf8230ee6..e4eaa01e63 100644
--- a/druid-shell/src/platform/gtk/clipboard.rs
+++ b/druid-shell/src/platform/gtk/clipboard.rs
@@ -64,8 +64,10 @@ impl Clipboard {
             let idx = idx as usize;
             if idx < formats.len() {
                 let item = &formats[idx];
-                if item.identifier == ClipboardFormat::TEXT {
-                    sel.set_text(unsafe { std::str::from_utf8_unchecked(&item.data) });
+                if let (ClipboardFormat::TEXT, Ok(data)) =
+                    (item.identifier, std::str::from_utf8(&item.data))
+                {
+                    sel.set_text(data);
                 } else {
                     let atom = Atom::intern(item.identifier);
                     let stride = 8;
@@ -130,7 +132,8 @@ impl Clipboard {
         let targets = clipboard.wait_for_targets().unwrap_or_default();
         targets
             .iter()
-            .map(|atom| unsafe { format!("{} ({})", atom.name(), atom.value()) })
+            // SAFETY: Atom::value() is 'self.0 as usize'. No idea why that is unsafe.
+            .map(|atom| format!("{} ({})", atom.name(), unsafe { atom.value() }))
             .collect()
     }
 }