diff --git a/external/toxcore/CMakeLists.txt b/external/toxcore/CMakeLists.txt
index 95f88a4..fbd36e6 100644
--- a/external/toxcore/CMakeLists.txt
+++ b/external/toxcore/CMakeLists.txt
@@ -91,6 +91,8 @@ add_library(toxcore STATIC
 	${TOX_DIR}toxcore/logger.h
 	${TOX_DIR}toxcore/Messenger.c
 	${TOX_DIR}toxcore/Messenger.h
+	${TOX_DIR}toxcore/mem.c
+	${TOX_DIR}toxcore/mem.h
 	${TOX_DIR}toxcore/mono_time.c
 	${TOX_DIR}toxcore/mono_time.h
 	${TOX_DIR}toxcore/net_crypto.c