diff --git a/samples/net/sockets/big_http_download/src/big_http_download.c b/samples/net/sockets/big_http_download/src/big_http_download.c
index 88afa96ccf5..63cabaf4e15 100644
--- a/samples/net/sockets/big_http_download/src/big_http_download.c
+++ b/samples/net/sockets/big_http_download/src/big_http_download.c
@@ -9,6 +9,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
+#include <errno.h>
 
 #include "mbedtls/md.h"
 
@@ -43,6 +44,12 @@
 #define MAX_URL_LENGTH 256
 #endif
 
+#if defined(CONFIG_SAMPLE_BIG_HTTP_DL_NUM_ITER)
+#define NUM_ITER CONFIG_SAMPLE_BIG_HTTP_DL_NUM_ITER
+#else
+#define NUM_ITER 0
+#endif
+
 /* This URL is parsed in-place, so buffer must be non-const. */
 static char download_url[MAX_URL_LENGTH] =
 #if defined(CONFIG_SAMPLE_BIG_HTTP_DL_URL)
@@ -358,7 +365,7 @@ void main(void)
 	unsigned int total_bytes = 0U;
 	int resolve_attempts = 10;
 	bool is_tls = false;
-	unsigned int num_iterations = CONFIG_SAMPLE_BIG_HTTP_DL_NUM_ITER;
+	unsigned int num_iterations = NUM_ITER;
 	bool redirect = false;
 
 #if defined(CONFIG_NET_SOCKETS_SOCKOPT_TLS)