diff --git a/assets/settings/default.json b/assets/settings/default.json
index 7944a564a63a9c..3e8983e25a6c17 100644
--- a/assets/settings/default.json
+++ b/assets/settings/default.json
@@ -530,6 +530,8 @@
     //   "window_width": "large",
     // 4. Extra Large width:
     //   "window_width": "xlarge"
+    // 5. Fullscreen width:
+    //   "window_width": "full"
     "window_width": "medium"
   },
   // Whether or not to remove any trailing whitespace from lines of a buffer
diff --git a/crates/file_finder/src/file_finder_settings.rs b/crates/file_finder/src/file_finder_settings.rs
index 920d5e0ccc6703..48e1dc58631913 100644
--- a/crates/file_finder/src/file_finder_settings.rs
+++ b/crates/file_finder/src/file_finder_settings.rs
@@ -41,6 +41,7 @@ pub enum FileFinderWidth {
     Medium,
     Large,
     XLarge,
+    Full,
 }
 
 impl FileFinderWidth {
@@ -52,12 +53,17 @@ impl FileFinderWidth {
             FileFinderWidth::Medium => 1024.,
             FileFinderWidth::Large => 768.,
             FileFinderWidth::XLarge => 512.,
+            FileFinderWidth::Full => 0.,
         };
 
         Pixels(padding_val)
     }
 
     pub fn calc_width(&self, window_width: Pixels) -> Pixels {
+        if self == &FileFinderWidth::Full {
+            return window_width;
+        }
+
         let min_window_width_px = Pixels(FileFinderWidth::MIN_WINDOW_WIDTH_PX);
 
         let padding_px = self.padding_px();