diff --git a/src/android/org/linphone/LinphonePreferences.java b/src/android/org/linphone/LinphonePreferences.java
index 2417a83cb..e3bc5c336 100644
--- a/src/android/org/linphone/LinphonePreferences.java
+++ b/src/android/org/linphone/LinphonePreferences.java
@@ -742,7 +742,10 @@ public class LinphonePreferences {
 
 	public void setAccountEnabled(int n, boolean enabled) {
 		LinphoneProxyConfig prxCfg = getProxyConfig(n);
-		if (prxCfg == null) return;
+		if (prxCfg == null) {
+			LinphoneUtils.displayErrorAlert(getString(R.string.error), mContext);
+			return;
+		}
 		prxCfg.edit();
 		prxCfg.enableRegister(enabled);
 		prxCfg.done();