diff --git a/models/CommentModel.php b/models/CommentModel.php
index 03eabd1..4dcc4a0 100644
--- a/models/CommentModel.php
+++ b/models/CommentModel.php
@@ -147,7 +147,19 @@ class CommentModel {
             return ['success' => false, 'error' => 'You do not have permission to edit this comment'];
         }
 
-        $sql = "UPDATE ticket_comments SET comment_text = ?, markdown_enabled = ?, updated_at = NOW() WHERE comment_id = ?";
+        // Check if updated_at column exists
+        $hasUpdatedAt = false;
+        $colCheck = $this->conn->query("SHOW COLUMNS FROM ticket_comments LIKE 'updated_at'");
+        if ($colCheck && $colCheck->num_rows > 0) {
+            $hasUpdatedAt = true;
+        }
+
+        if ($hasUpdatedAt) {
+            $sql = "UPDATE ticket_comments SET comment_text = ?, markdown_enabled = ?, updated_at = NOW() WHERE comment_id = ?";
+        } else {
+            $sql = "UPDATE ticket_comments SET comment_text = ?, markdown_enabled = ? WHERE comment_id = ?";
+        }
+
         $stmt = $this->conn->prepare($sql);
         $markdownInt = $markdownEnabled ? 1 : 0;
         $stmt->bind_param("sii", $commentText, $markdownInt, $commentId);
@@ -158,7 +170,7 @@ class CommentModel {
                 'comment_id' => $commentId,
                 'comment_text' => $commentText,
                 'markdown_enabled' => $markdownInt,
-                'updated_at' => date('M d, Y H:i')
+                'updated_at' => $hasUpdatedAt ? date('M d, Y H:i') : null
             ];
         } else {
             return ['success' => false, 'error' => $this->conn->error];