diff --git a/ChatView/ChatUtils.cpp b/ChatView/ChatUtils.cpp
index 57d22b0..d6d0409 100644
--- a/ChatView/ChatUtils.cpp
+++ b/ChatView/ChatUtils.cpp
@@ -29,4 +29,25 @@ void ChatUtils::copyToClipboard(const QString &text)
     QGuiApplication::clipboard()->setText(text);
 }
 
+QString ChatUtils::getSafeMarkdownText(const QString &text) const
+{
+    // TODO replace to QTextMarkdownImporter after QtC on Qt6.9.0
+    QString safeText;
+    safeText.reserve(text.size());
+
+    for (QChar ch : text) {
+        if (ch.isNull()) {
+            safeText.append(' ');
+        } else if (ch == '\n' || ch == '\t' || ch == '\r' || ch == ' ') {
+            safeText.append(ch);
+        } else if (ch.isPrint()) {
+            safeText.append(ch);
+        } else {
+            safeText.append(QChar(0xFFFD));
+        }
+    }
+
+    return safeText;
+}
+
 } // namespace QodeAssist::Chat
diff --git a/ChatView/ChatUtils.h b/ChatView/ChatUtils.h
index e8ec539..9f5946d 100644
--- a/ChatView/ChatUtils.h
+++ b/ChatView/ChatUtils.h
@@ -34,6 +34,7 @@ public:
         : QObject(parent) {};
 
     Q_INVOKABLE void copyToClipboard(const QString &text);
+    Q_INVOKABLE QString getSafeMarkdownText(const QString &text) const;
 };
 
 } // namespace QodeAssist::Chat
diff --git a/ChatView/qml/ChatItem.qml b/ChatView/qml/ChatItem.qml
index 03af679..d39af9d 100644
--- a/ChatView/qml/ChatItem.qml
+++ b/ChatView/qml/ChatItem.qml
@@ -158,9 +158,12 @@ Rectangle {
         height: implicitHeight + 10
         verticalAlignment: Text.AlignVCenter
         leftPadding: 10
-        text: itemData.text
-    }
+        text: utils.getSafeMarkdownText(itemData.text)
 
+        ChatUtils {
+            id: utils
+        }
+    }
 
     component CodeBlockComponent : CodeBlock {
         id: codeblock