diff --git a/sdk/src/arch/linux/net_socket.cpp b/sdk/src/arch/linux/net_socket.cpp
index 36b9bec..5cc69b6 100644
--- a/sdk/src/arch/linux/net_socket.cpp
+++ b/sdk/src/arch/linux/net_socket.cpp
@@ -167,7 +167,7 @@ u_result SocketAddress::getAddressAsString(char * buffer, size_t buffersize) con
 
         break;
     }
-    return ans<=0?RESULT_OPERATION_FAIL:RESULT_OK;
+    return ans==NULL?RESULT_OPERATION_FAIL:RESULT_OK;
 }
 
 
diff --git a/sdk/src/sl_lidar_driver.cpp b/sdk/src/sl_lidar_driver.cpp
index b82ed0c..f71c196 100644
--- a/sdk/src/sl_lidar_driver.cpp
+++ b/sdk/src/sl_lidar_driver.cpp
@@ -551,7 +551,7 @@ namespace sl {
        
         sl_result grabScanDataHq(sl_lidar_response_measurement_node_hq_t* nodebuffer, size_t& count, sl_u32 timeout = DEFAULT_TIMEOUT)
         {
-            switch (_dataEvt.wait(timeout))
+            switch (static_cast<unsigned long long int>(_dataEvt.wait(timeout)))
             {
             case rp::hal::Event::EVENT_TIMEOUT:
                 count = 0;
@@ -1984,4 +1984,4 @@ namespace sl {
     {
         return new SlamtecLidarDriver();
     }
-}
\ No newline at end of file
+}