diff --git a/src/uu/csplit/src/csplit.rs b/src/uu/csplit/src/csplit.rs
index 87433e93793..0c179313553 100644
--- a/src/uu/csplit/src/csplit.rs
+++ b/src/uu/csplit/src/csplit.rs
@@ -439,9 +439,7 @@ impl SplitWriter<'_> {
 
             while let Some((ln, line)) = input_iter.next() {
                 let line = line?;
-                let l = line
-                    .strip_suffix(b"\r\n")
-                    .unwrap_or_else(|| line.strip_suffix(b"\n").unwrap_or(&line));
+                let l = line.strip_suffix(b"\n").unwrap_or(&line);
                 if regex.is_match(l) {
                     let mut next_line_suppress_matched = false;
                     match (self.options.suppress_matched, offset) {
@@ -495,9 +493,7 @@ impl SplitWriter<'_> {
             input_iter.set_size_of_buffer(offset_usize);
             while let Some((ln, line)) = input_iter.next() {
                 let line = line?;
-                let l = line
-                    .strip_suffix(b"\r\n")
-                    .unwrap_or_else(|| line.strip_suffix(b"\n").unwrap_or(&line));
+                let l = line.strip_suffix(b"\n").unwrap_or(&line);
                 if regex.is_match(l) {
                     if offset_usize > lines_in_split {
                         self.finish_split()?;
diff --git a/tests/by-util/test_csplit.rs b/tests/by-util/test_csplit.rs
index 55f21141e2c..c75c8d7f5ec 100644
--- a/tests/by-util/test_csplit.rs
+++ b/tests/by-util/test_csplit.rs
@@ -131,6 +131,35 @@ fn test_binary_input_regex() {
     }
 }
 
+#[test]
+fn test_regex_does_not_ignore_carriage_return() {
+    for (pattern, stdout) in [("/^---$/", "9\n"), ("/^---$/-1", "9\n"), ("%^---$%", "")] {
+        let (at, mut ucmd) = at_and_ucmd!();
+        ucmd.args(&["-", pattern])
+            .pipe_in("x\n---\r\ny\n")
+            .fails_with_code(1)
+            .stdout_is(stdout)
+            .stderr_is(format!("csplit: '{pattern}': match not found\n"));
+
+        assert!(!at.file_exists("xx00"));
+    }
+}
+
+#[test]
+fn test_regex_matches_carriage_return() {
+    let input = "x\n---\r\ny\n";
+    for (pattern, split) in [("/^---.$/", 2), ("/^y$/-1", 2), ("/^---.$/+1", 7)] {
+        let (at, mut ucmd) = at_and_ucmd!();
+        ucmd.args(&["-", pattern])
+            .pipe_in(input)
+            .succeeds()
+            .stdout_only(format!("{split}\n{}\n", input.len() - split));
+
+        assert_eq!(at.read("xx00"), &input[..split]);
+        assert_eq!(at.read("xx01"), &input[split..]);
+    }
+}
+
 #[test]
 fn test_binary_input_skip_regex() {
     let (at, mut ucmd) = at_and_ucmd!();