diff --git a/annotation/src/main/java/lcsb/mapviewer/annotation/services/DrugbankHTMLParser.java b/annotation/src/main/java/lcsb/mapviewer/annotation/services/DrugbankHTMLParser.java
index f8563a76a9b792c1ac036dba3096034574025214..3579297e2956edad86824de51bd691b67a4d8c22 100644
--- a/annotation/src/main/java/lcsb/mapviewer/annotation/services/DrugbankHTMLParser.java
+++ b/annotation/src/main/java/lcsb/mapviewer/annotation/services/DrugbankHTMLParser.java
@@ -474,6 +474,14 @@ public class DrugbankHTMLParser extends DrugAnnotation implements IExternalServi
 		}
 	}
 
+	/**
+	 * Finds if drug is approved.
+	 * 
+	 * @param page
+	 *          webpage content used for parsing
+	 * 
+	 * @return <code>true</code> if drug is approved
+	 */
 	private Boolean getApproved(String page) {
 		int index = page.indexOf("<th>Groups</th>");
 		if (index <= 0) {