diff --git a/app/src/main/java/com/limelight/PcView.java b/app/src/main/java/com/limelight/PcView.java
index 2ce51d4f..b7e073c2 100644
--- a/app/src/main/java/com/limelight/PcView.java
+++ b/app/src/main/java/com/limelight/PcView.java
@@ -346,7 +346,8 @@ public class PcView extends Activity implements AdapterFragmentCallbacks {
     }
 
     private void doPair(final ComputerDetails computer) {
-        if (computer.state == ComputerDetails.State.OFFLINE) {
+        if (computer.state == ComputerDetails.State.OFFLINE ||
+                ServerHelper.getCurrentAddressFromComputer(computer) == null) {
             Toast.makeText(PcView.this, getResources().getString(R.string.pair_pc_offline), Toast.LENGTH_SHORT).show();
             return;
         }
@@ -478,7 +479,8 @@ public class PcView extends Activity implements AdapterFragmentCallbacks {
     }
 
     private void doUnpair(final ComputerDetails computer) {
-        if (computer.state == ComputerDetails.State.OFFLINE) {
+        if (computer.state == ComputerDetails.State.OFFLINE ||
+                ServerHelper.getCurrentAddressFromComputer(computer) == null) {
             Toast.makeText(PcView.this, getResources().getString(R.string.error_pc_offline), Toast.LENGTH_SHORT).show();
             return;
         }
diff --git a/app/src/main/java/com/limelight/utils/ServerHelper.java b/app/src/main/java/com/limelight/utils/ServerHelper.java
index 8ac924ef..c9486b19 100644
--- a/app/src/main/java/com/limelight/utils/ServerHelper.java
+++ b/app/src/main/java/com/limelight/utils/ServerHelper.java
@@ -37,6 +37,11 @@ public class ServerHelper {
 
     public static void doStart(Activity parent, NvApp app, ComputerDetails computer,
                                ComputerManagerService.ComputerManagerBinder managerBinder) {
+        if (computer.state == ComputerDetails.State.OFFLINE ||
+                ServerHelper.getCurrentAddressFromComputer(computer) == null) {
+            Toast.makeText(parent, parent.getResources().getString(R.string.pair_pc_offline), Toast.LENGTH_SHORT).show();
+            return;
+        }
         parent.startActivity(createStartIntent(parent, app, computer, managerBinder));
     }