diff --git a/asdfghhjkl b/asdfghhjkl
new file mode 100644
index 000000000..192c08d9b
Binary files /dev/null and b/asdfghhjkl differ
diff --git a/core/translate/insert.rs b/core/translate/insert.rs
index 880e47399..6549eb5ff 100644
--- a/core/translate/insert.rs
+++ b/core/translate/insert.rs
@@ -1446,7 +1446,9 @@ fn build_insertion<'a>(
                         register: rowid_register,
                     });
                 } else {
-                    column_mappings[idx_in_table].value_index = Some(value_index);
+                    if column_mappings[idx_in_table].value_index.is_none() {
+                        column_mappings[idx_in_table].value_index = Some(value_index);
+                    }
                 }
             } else if ROWID_STRS
                 .iter()
diff --git a/idk.text b/idk.text
new file mode 100644
index 000000000..8fefeafed
--- /dev/null
+++ b/idk.text
@@ -0,0 +1 @@
+bans ok
diff --git a/testing/insert.test b/testing/insert.test
index e8c270aeb..5d4f9896e 100755
--- a/testing/insert.test
+++ b/testing/insert.test
@@ -865,3 +865,11 @@ do_execsql_test_in_memory_any_error wrong-column-count-partial-columns-values-to
     CREATE TABLE t(a, b, c);
     INSERT INTO t(a) VALUES (1, 2);
 }
+
+
+# https://github.com/tursodatabase/turso/issues/3951
+do_execsql_test_on_specific_db 1 {:memory:} insert-999999999  {
+create table t(a);
+insert into t(a, a) values (2, 3);
+select * from t;
+}{2}
\ No newline at end of file
diff --git a/wth.d b/wth.d
new file mode 100644
index 000000000..e69de29bb