diff --git a/app/src/main/java/eu/faircode/netguard/ActivitySettings.java b/app/src/main/java/eu/faircode/netguard/ActivitySettings.java
index 51f562cf..ef0aa83a 100644
--- a/app/src/main/java/eu/faircode/netguard/ActivitySettings.java
+++ b/app/src/main/java/eu/faircode/netguard/ActivitySettings.java
@@ -323,10 +323,16 @@ public class ActivitySettings extends AppCompatActivity implements SharedPrefere
             prefs.edit().putBoolean("show_system", prefs.getBoolean(name, false)).apply();
             SinkholeService.reload(null, "setting changed", this);
 
-        } else if ("log".equals(name))
-            SinkholeService.reload(null, "setting changed", this);
+        } else if ("log".equals(name)) {
+            if (prefs.getBoolean(name, false) && !IAB.isPurchased(ActivityPro.SKU_LOG, this)) {
+                prefs.edit().putBoolean(name, false).apply();
+                ((SwitchPreference) getPreferenceScreen().findPreference(name)).setChecked(false);
+                startActivity(new Intent(this, ActivityPro.class));
+                return;
+            } else
+                SinkholeService.reload(null, "setting changed", this);
 
-        else if ("auto_enable".equals(name))
+        } else if ("auto_enable".equals(name))
             getPreferenceScreen().findPreference(name).setTitle(getString(R.string.setting_auto, prefs.getString(name, "0")));
 
         else if ("screen_delay".equals(name))