diff --git a/samples/linux/main.c b/samples/linux/main.c
index 2dee640..9167ff9 100644
--- a/samples/linux/main.c
+++ b/samples/linux/main.c
@@ -133,10 +133,12 @@ static void sample_show_memory(void)
  */
 static void sample_singlline(void)
 {
+    at_attr_t attr;
+    at_attr_deinit(&attr);    
     // => AT+CSQ
     // <= +CSQ:<rssi>,<ber>
     // <= OK    
-    at_send_singlline(at_obj, NULL, 200, 1, "AT+CSQ");  
+    at_send_singlline(at_obj, &attr, "AT+CSQ");  
 }
 
 /**
diff --git a/samples/linux/src/at_port_linux.c b/samples/linux/src/at_port_linux.c
index d54be16..5357d69 100644
--- a/samples/linux/src/at_port_linux.c
+++ b/samples/linux/src/at_port_linux.c
@@ -7,6 +7,7 @@
  */
 #include <stddef.h>
 #include <stdlib.h>
+#include <sys/time.h>
 
 /**
  * @brief Custom malloc for AT component.