diff --git a/Libraries/LibGUI/GTextEditor.cpp b/Libraries/LibGUI/GTextEditor.cpp
index 5ccb9fb3ae..2a25fdd0f6 100644
--- a/Libraries/LibGUI/GTextEditor.cpp
+++ b/Libraries/LibGUI/GTextEditor.cpp
@@ -1405,3 +1405,14 @@ void GTextEditor::Line::for_each_visual_line(Callback callback) const
         ++line_index;
     }
 }
+
+void GTextEditor::set_line_wrapping_enabled(bool enabled)
+{
+    if (m_line_wrapping_enabled == enabled)
+        return;
+
+    m_line_wrapping_enabled = enabled;
+    update_content_size();
+    recompute_all_visual_lines();
+    update();
+}
diff --git a/Libraries/LibGUI/GTextEditor.h b/Libraries/LibGUI/GTextEditor.h
index 104aa82d90..98b8587924 100644
--- a/Libraries/LibGUI/GTextEditor.h
+++ b/Libraries/LibGUI/GTextEditor.h
@@ -102,7 +102,7 @@ public:
     void set_automatic_indentation_enabled(bool enabled) { m_automatic_indentation_enabled = enabled; }
 
     bool is_line_wrapping_enabled() const { return m_line_wrapping_enabled; }
-    void set_line_wrapping_enabled(bool enabled) { m_line_wrapping_enabled = enabled; }
+    void set_line_wrapping_enabled(bool);
 
     TextAlignment text_alignment() const { return m_text_alignment; }
     void set_text_alignment(TextAlignment);