diff --git a/components/com_config/forms/modules_advanced.xml b/components/com_config/forms/modules_advanced.xml
index cb435c20094e0..308ccfc08b2bf 100644
--- a/components/com_config/forms/modules_advanced.xml
+++ b/components/com_config/forms/modules_advanced.xml
@@ -31,6 +31,7 @@
 				name="header_class"
 				type="textarea"
 				label="COM_MODULES_FIELD_HEADER_CLASS_LABEL"
+				rows="3"
 			/>
 
 			<field