diff --git a/src/fr/devinsy/sikevadb/sql/SQLSikevaDB.java b/src/fr/devinsy/sikevadb/sql/SQLSikevaDB.java
index c0aab47..151dae2 100644
--- a/src/fr/devinsy/sikevadb/sql/SQLSikevaDB.java
+++ b/src/fr/devinsy/sikevadb/sql/SQLSikevaDB.java
@@ -90,19 +90,19 @@ public class SQLSikevaDB implements SikevaDB
 	{
 		if (StringUtils.isBlank(driverClassName))
 		{
-			throw new NullPointerException("driverClassName is null.");
+			throw new IllegalArgumentException("driverClassName is null.");
 		}
 		else if (StringUtils.isBlank(url))
 		{
-			throw new NullPointerException("url is null.");
+			throw new IllegalArgumentException("url is null.");
 		}
 		else if (StringUtils.isBlank(login))
 		{
-			throw new NullPointerException("login is null.");
+			throw new IllegalArgumentException("login is null.");
 		}
 		else if (password == null)
 		{
-			throw new NullPointerException("password is null");
+			throw new IllegalArgumentException("password is null");
 		}
 		else
 		{
@@ -476,7 +476,7 @@ public class SQLSikevaDB implements SikevaDB
 		}
 		else
 		{
-			throw new NullPointerException("Connection is not initialized.");
+			throw new IllegalArgumentException("Connection is not initialized.");
 		}
 
 		//