diff --git a/app/src/main/java/com/money/manager/ex/currency/CurrencyService.java b/app/src/main/java/com/money/manager/ex/currency/CurrencyService.java
index 84001d365..55a253e2e 100644
--- a/app/src/main/java/com/money/manager/ex/currency/CurrencyService.java
+++ b/app/src/main/java/com/money/manager/ex/currency/CurrencyService.java
@@ -21,6 +21,7 @@
 import android.text.TextUtils;
 import android.util.Log;
 import android.util.LongSparseArray;
+import android.widget.Toast;
 
 import com.money.manager.ex.Constants;
 import com.money.manager.ex.MmexApplication;
@@ -493,6 +494,10 @@ public void updateExchangeRates(List<Currency> currencies){
 
         String symbol;
         String baseCurrencySymbol = getBaseCurrencyCode();
+        if (baseCurrencySymbol == null ) {
+            Toast.makeText(getContext(),R.string.missing_default_currency,Toast.LENGTH_LONG).show();
+            return;
+        }
         ArrayList<String> currencySymbols = new ArrayList<>();
 
         for (Currency currency : currencies) {
diff --git a/app/src/main/java/com/money/manager/ex/settings/DatabaseSettingsFragment.java b/app/src/main/java/com/money/manager/ex/settings/DatabaseSettingsFragment.java
index a11a4223d..2a3fe5a88 100644
--- a/app/src/main/java/com/money/manager/ex/settings/DatabaseSettingsFragment.java
+++ b/app/src/main/java/com/money/manager/ex/settings/DatabaseSettingsFragment.java
@@ -128,8 +128,12 @@ private void refreshDbVersion() {
         final Preference preference = findPreference(requireActivity().getString(R.string.pref_database_version));
 
         String version = "N/A";
-
-        SupportSQLiteDatabase db = openHelper.get().getReadableDatabase();
+        SupportSQLiteDatabase db = null;
+        try {
+            db = openHelper.get().getReadableDatabase();
+        } catch (Exception e) {
+            Timber.e(e);
+        }
         if (db != null) {
             int versionNumber = db.getVersion();
             version = Integer.toString(versionNumber);
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index e456d0bf3..8d6e28490 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -149,6 +149,7 @@
     <string name="conversion_to_base_rate">Conversion</string>
     <string name="currency_name_empty">Currency name is required</string>
     <string name="new_edit_currency">New/Edit Currency</string>
+    <string name="missing_default_currency">Missing Default Currency in setting</string>
 
     <!-- transaction -->
     <string name="amount">Amount</string>