diff --git a/ports/esp8266/Makefile b/ports/esp8266/Makefile
index 70b4ce35c3..177a32353b 100644
--- a/ports/esp8266/Makefile
+++ b/ports/esp8266/Makefile
@@ -85,7 +85,7 @@ SRC_C = \
 	moduos.c \
 	ets_alt_task.c \
 	fatfs_port.c \
-	axtls_helpers.c \
+	posix_helpers.c \
 	hspi.c \
 	$(SRC_MOD)
 
diff --git a/ports/esp8266/axtls_helpers.c b/ports/esp8266/posix_helpers.c
similarity index 97%
rename from ports/esp8266/axtls_helpers.c
rename to ports/esp8266/posix_helpers.c
index 6d508fdeb1..f8e4880d2b 100644
--- a/ports/esp8266/axtls_helpers.c
+++ b/ports/esp8266/posix_helpers.c
@@ -29,7 +29,7 @@
 #include "py/mphal.h"
 #include "py/gc.h"
 
-// Functions for axTLS
+// Functions for external libs like axTLS, BerkeleyDB, etc.
 
 void *malloc(size_t size) {
     return gc_alloc(size, false);