diff --git a/src/net/frakbot/FWeather/util/LocationHelper.java b/src/net/frakbot/FWeather/util/LocationHelper.java
index fd1d700..05d70b0 100644
--- a/src/net/frakbot/FWeather/util/LocationHelper.java
+++ b/src/net/frakbot/FWeather/util/LocationHelper.java
@@ -135,6 +135,13 @@ private long getMinUpdateInterval() {
         SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(mContext);
         String valuePreference = sp.getString(Const.Preferences.SYNC_FREQUENCY, "300");
         int value = Integer.decode(valuePreference);
+        if (value <= 0) {
+            value = 300;
+            try {
+                sp.edit().putString(Const.Preferences.SYNC_FREQUENCY, "300").commit();
+            }
+            catch (Exception ignored) {}
+        }
         return value * 1000;
     }