diff --git a/src/click/examples/nsclick-raw-wlan.cc b/src/click/examples/nsclick-raw-wlan.cc
index f9d983a41..ec2b867da 100644
--- a/src/click/examples/nsclick-raw-wlan.cc
+++ b/src/click/examples/nsclick-raw-wlan.cc
@@ -45,7 +45,6 @@ int main (int argc, char *argv[])
 {
 #ifdef NS3_CLICK
   double rss = -80;
-  Time interPacketInterval = Seconds (1.0);
 
   // Setup nodes
   NodeContainer wifiNodes;
diff --git a/src/click/helper/click-internet-stack-helper.cc b/src/click/helper/click-internet-stack-helper.cc
index b3f793f85..1a4d6996e 100644
--- a/src/click/helper/click-internet-stack-helper.cc
+++ b/src/click/helper/click-internet-stack-helper.cc
@@ -297,6 +297,7 @@ ClickInternetStackHelper::EnablePcapIpv4Internal (std::string prefix, Ptr<Ipv4>
       result = ipv4L3Protocol->TraceConnectWithoutContext ("Rx", MakeCallback (&Ipv4L3ProtocolRxTxSink));
       NS_ASSERT_MSG (result == true, "ClickInternetStackHelper::EnablePcapIpv4Internal():  "
                      "Unable to connect ipv4L3Protocol \"Rx\"");
+      (void) result; //cast to void to suppress variable set but not used compiler warning in optimized builds
     }
 
   g_interfaceFileMapIpv4[std::make_pair (ipv4, interface)] = file;