diff --git a/src/estd/internal/utility.cpp b/src/estd/internal/utility.cpp
index 27ce140f..1e80d986 100644
--- a/src/estd/internal/utility.cpp
+++ b/src/estd/internal/utility.cpp
@@ -54,7 +54,6 @@ void esp_log_write(esp_log_level_t level, const char* tag, const char* format, .
 {
     if(level <= LOG_LOCAL_LEVEL)
     {
-        // TODO: Write out tag
         esp_log_write_header(level, tag);
 
         va_list args;
diff --git a/src/estd/port/esp-idf/fake/esp_err.h b/src/estd/port/esp-idf/fake/esp_err.h
index 9638c508..e16aac7c 100644
--- a/src/estd/port/esp-idf/fake/esp_err.h
+++ b/src/estd/port/esp-idf/fake/esp_err.h
@@ -7,6 +7,12 @@ extern "C" {
 typedef int esp_err_t;
 
 #define ESP_OK 0
+#define ESP_FAIL        -1      /*!< Generic esp_err_t code indicating failure */
+
+#define ESP_ERR_NO_MEM              0x101   /*!< Out of memory */
+#define ESP_ERR_INVALID_ARG         0x102   /*!< Invalid argument */
+#define ESP_ERR_INVALID_STATE       0x103   /*!< Invalid state */
+#define ESP_ERR_INVALID_SIZE        0x104   /*!< Invalid size */
 
 #ifdef __cplusplus
 }
diff --git a/src/estd/port/esp-idf/fake/esp_log.h b/src/estd/port/esp-idf/fake/esp_log.h
index bb8185cb..5a472da5 100644
--- a/src/estd/port/esp-idf/fake/esp_log.h
+++ b/src/estd/port/esp-idf/fake/esp_log.h
@@ -8,6 +8,8 @@ extern "C" {
 
 #include <stdio.h>
 
+#include "esp_err.h"
+
 enum esp_log_level_t
 {
     ESP_LOG_NONE,
diff --git a/test/catch/port-test.cpp b/test/catch/port-test.cpp
index 86a1529f..9f76d984 100644
--- a/test/catch/port-test.cpp
+++ b/test/catch/port-test.cpp
@@ -38,5 +38,7 @@ TEST_CASE("port (cross plat specific) tests")
         ESP_LOGE("Tag2", "uh oh! %d", 5);
 
         REQUIRE(fake_log_out == "E Tag2: uh oh! 5\n");
+
+        ESP_LOGW("Tag2", "Goodbye");
     }
 }