diff --git a/components/driver/rmt.c b/components/driver/rmt.c
index 21bc8696b..9fc36d49c 100644
--- a/components/driver/rmt.c
+++ b/components/driver/rmt.c
@@ -13,6 +13,7 @@
 // limitations under the License.
 #include <esp_types.h>
 #include <string.h>
+#include <stdlib.h>
 #include "freertos/FreeRTOS.h"
 #include "freertos/semphr.h"
 #include "freertos/xtensa_api.h"
diff --git a/components/freertos/include/freertos/FreeRTOSConfig.h b/components/freertos/include/freertos/FreeRTOSConfig.h
index 13ce73e0a..4f1012657 100644
--- a/components/freertos/include/freertos/FreeRTOSConfig.h
+++ b/components/freertos/include/freertos/FreeRTOSConfig.h
@@ -108,6 +108,7 @@
 
 /* configASSERT behaviour */
 #ifndef __ASSEMBLER__
+#include <stdlib.h> /* for abort() */
 #include "rom/ets_sys.h"
 
 #if defined(CONFIG_FREERTOS_ASSERT_DISABLE)
@@ -126,8 +127,6 @@
 #endif
 
 #if CONFIG_FREERTOS_ASSERT_ON_UNTESTED_FUNCTION
-#include <stdlib.h>
-#include "rom/ets_sys.h"
 #define UNTESTED_FUNCTION() { ets_printf("Untested FreeRTOS function %s\r\n", __FUNCTION__); configASSERT(false); } while(0)
 #else
 #define UNTESTED_FUNCTION()
diff --git a/components/mbedtls/port/esp_bignum.c b/components/mbedtls/port/esp_bignum.c
index 7570820e3..ec2e42039 100644
--- a/components/mbedtls/port/esp_bignum.c
+++ b/components/mbedtls/port/esp_bignum.c
@@ -25,6 +25,7 @@
 #include <malloc.h>
 #include <limits.h>
 #include <assert.h>
+#include <stdlib.h>
 #include "mbedtls/bignum.h"
 #include "rom/bigint.h"
 #include "soc/hwcrypto_reg.h"
diff --git a/examples/04_https_request/main/https_request_main.c b/examples/04_https_request/main/https_request_main.c
index 2ad56681d..1f7112bc8 100644
--- a/examples/04_https_request/main/https_request_main.c
+++ b/examples/04_https_request/main/https_request_main.c
@@ -22,6 +22,7 @@
  * limitations under the License.
  */
 #include <string.h>
+#include <stdlib.h>
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 #include "freertos/event_groups.h"