diff --git a/src/org/linphone/LinphoneManager.java b/src/org/linphone/LinphoneManager.java
index e2fbc3369..f2811c0a7 100644
--- a/src/org/linphone/LinphoneManager.java
+++ b/src/org/linphone/LinphoneManager.java
@@ -608,7 +608,7 @@ public final class LinphoneManager implements LinphoneCoreListener {
 		String username = getPrefString(getString(R.string.pref_username_key) + key, null);
 		String password = getPrefString(getString(R.string.pref_passwd_key) + key, null);
 		String domain = getPrefString(getString(R.string.pref_domain_key) + key, null);
-		if (username != null && username.length() > 0) {
+		if (username != null && username.length() > 0 && password != null) {
 			LinphoneAuthInfo lAuthInfo =  LinphoneCoreFactory.instance().createAuthInfo(username, password, null);
 			mLc.addAuthInfo(lAuthInfo);