diff --git a/samples/pn_dev/app_utils.c b/samples/pn_dev/app_utils.c
index 99381f56..f77fdfb7 100644
--- a/samples/pn_dev/app_utils.c
+++ b/samples/pn_dev/app_utils.c
@@ -224,7 +224,7 @@ void app_utils_get_error_code_strings (
    const char ** err_cls_str,
    const char ** err_code_str)
 {
-   if (err_cls_str == NULL || err_cls_str == NULL)
+   if (err_cls_str == NULL || err_code_str == NULL)
    {
       return;
    }
diff --git a/samples/pn_dev_lan9662/app_utils.c b/samples/pn_dev_lan9662/app_utils.c
index 98b20fe5..106e92df 100644
--- a/samples/pn_dev_lan9662/app_utils.c
+++ b/samples/pn_dev_lan9662/app_utils.c
@@ -116,7 +116,7 @@ void app_utils_get_error_code_strings (
    const char ** err_cls_str,
    const char ** err_code_str)
 {
-   if (err_cls_str == NULL || err_cls_str == NULL)
+   if (err_cls_str == NULL || err_code_str == NULL)
    {
       return;
    }