diff --git a/CHANGELOG.md b/CHANGELOG.md
index ccc4f95..d05f41c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@
 - New document server (Thanks Dani!)
 - New function FORMULATEXT
 
+### Fixed
+
+- Fixed several issues with pasting content
+
 ## [0.2.0] - 2024-11-06 (The HN release)
 
 ### Added
diff --git a/base/src/test/user_model/test_paste_csv.rs b/base/src/test/user_model/test_paste_csv.rs
index 3665845..a20262a 100644
--- a/base/src/test/user_model/test_paste_csv.rs
+++ b/base/src/test/user_model/test_paste_csv.rs
@@ -9,7 +9,7 @@ fn csv_paste() {
     assert_eq!(model.get_formatted_cell_value(0, 7, 7), Ok("0".to_string()));
 
     // paste some numbers in B4:C7
-    let csv = "1,2,3\n4,5,6";
+    let csv = "1\t2\t3\n4\t5\t6";
     let area = Area {
         sheet: 0,
         row: 4,
@@ -88,7 +88,7 @@ fn cut_paste() {
     model.update_range_style(&range, "font.b", "true").unwrap();
 
     model
-        .set_user_input(0, 2, 1, "A season of faith, \"perfection\"")
+        .set_user_input(0, 2, 1, "A season of faith\t \"perfection\"")
         .unwrap();
 
     // Select A1:B2 and copy
@@ -136,7 +136,7 @@ fn copy_paste_internal() {
     model.update_range_style(&range, "font.b", "true").unwrap();
 
     model
-        .set_user_input(0, 2, 1, "A season of faith, \"perfection\"")
+        .set_user_input(0, 2, 1, "A season of faith\t \"perfection\"")
         .unwrap();
 
     // Select A1:B2 and copy
@@ -144,7 +144,7 @@ fn copy_paste_internal() {
     let copy = model.copy_to_clipboard().unwrap();
     assert_eq!(
         copy.csv,
-        "42,127\n\"A season of faith, \"\"perfection\"\"\",\n"
+        "42\t127\n\"A season of faith\t \"\"perfection\"\"\"\t\n"
     );
     assert_eq!(copy.range, (1, 1, 2, 2));
 
diff --git a/base/src/user_model/common.rs b/base/src/user_model/common.rs
index 7a3a69b..2ee1599 100644
--- a/base/src/user_model/common.rs
+++ b/base/src/user_model/common.rs
@@ -63,30 +63,6 @@ pub struct BorderArea {
     r#type: BorderType,
 }
 
-fn guess_delimiter(data: &str) -> char {
-    let delimiters = [',', ';', '\t', '|', ':'];
-    let mut best_delim = ',';
-    let mut max_fields = 0;
-
-    for &delim in &delimiters {
-        let mut fields_per_line = Vec::new();
-
-        for line in data.lines() {
-            let fields = line.split(delim).count();
-            fields_per_line.push(fields);
-        }
-
-        let first_count = fields_per_line.first().copied().unwrap_or(0);
-
-        if fields_per_line.iter().all(|&count| count == first_count) && first_count > max_fields {
-            max_fields = first_count;
-            best_delim = delim;
-        }
-    }
-
-    best_delim
-}
-
 fn boolean(value: &str) -> Result<bool, String> {
     match value {
         "true" => Ok(true),
@@ -1510,7 +1486,7 @@ impl UserModel {
     pub fn copy_to_clipboard(&self) -> Result<Clipboard, String> {
         let selected_area = self.get_selected_view();
         let sheet = selected_area.sheet;
-        let mut wtr = WriterBuilder::new().from_writer(vec![]);
+        let mut wtr = WriterBuilder::new().delimiter(b'\t').from_writer(vec![]);
 
         let mut data = HashMap::new();
         let [row_start, column_start, row_end, column_end] = selected_area.range;
@@ -1669,12 +1645,9 @@ impl UserModel {
         let mut row = area.row;
         let mut column = area.column;
         let mut csv_reader = Cursor::new(csv);
-
-        let delimiter = guess_delimiter(csv) as u8;
-        // Reset the cursor to the beginning after sniffing
         csv_reader.set_position(0);
         let mut reader = ReaderBuilder::new()
-            .delimiter(delimiter)
+            .delimiter(b'\t')
             .has_headers(false)
             .from_reader(csv_reader);
         for record in reader.records() {
@@ -2030,8 +2003,6 @@ mod tests {
         user_model::common::{horizontal, vertical},
     };
 
-    use super::guess_delimiter;
-
     #[test]
     fn test_vertical() {
         let all = vec![
@@ -2062,11 +2033,4 @@ mod tests {
             assert_eq!(horizontal(&format!("{}", a)), Ok(a));
         }
     }
-
-    #[test]
-    fn test_guess_delimiter() {
-        assert_eq!(guess_delimiter("1,2,3\n4,5,6"), ',');
-        assert_eq!(guess_delimiter("1\t2\t3\n4\t5\t6"), '\t');
-        assert_eq!(guess_delimiter("1"), ',');
-    }
 }