diff --git a/CHANGELOG.md b/CHANGELOG.md
index 904ef262..e5db1cd8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/):
 - Smart-case in interactive `cd` broken due to a typo ([#3540])
 - Fix shell formatting for non-spread opener rules ([#3532])
 - Account for URL covariance in `Url:join()` ([#3514])
+- `sort extension` excludes directories since only files have extensions ([#3582])
 
 ## [v26.1.4]
 
diff --git a/yazi-fs/src/sorter.rs b/yazi-fs/src/sorter.rs
index 2d745dc7..5f189d2f 100644
--- a/yazi-fs/src/sorter.rs
+++ b/yazi-fs/src/sorter.rs
@@ -40,12 +40,14 @@ impl FilesSorter {
 				if ord == Ordering::Equal { by_alphabetical(a, b) } else { ord }
 			}),
 			SortBy::Extension => items.sort_unstable_by(|a, b| {
+				let aa = a.url.ext().filter(|_| a.is_file());
+				let bb = b.url.ext().filter(|_| b.is_file());
 				let ord = if self.sensitive {
-					self.cmp(a.url.ext(), b.url.ext(), self.promote(a, b))
+					self.cmp(aa, bb, self.promote(a, b))
 				} else {
 					self.cmp_insensitive(
-						a.url.ext().map_or(&[], |s| s.encoded_bytes()),
-						b.url.ext().map_or(&[], |s| s.encoded_bytes()),
+						aa.map_or(&[], |s| s.encoded_bytes()),
+						bb.map_or(&[], |s| s.encoded_bytes()),
 						self.promote(a, b),
 					)
 				};