1 files changed, 1 insertions, 1 deletions

diff --git a/toxcore/crypto_core.api.h b/toxcore/crypto_core.api.h
index e9e8aeb2..4b40860d 100644
--- a/toxcore/crypto_core.api.h
+++ b/toxcore/crypto_core.api.h
@@ -26,8 +26,8 @@
 #define CRYPTO_CORE_H
 
 #include <stdbool.h>
+#include <stddef.h>
 #include <stdint.h>
-#include <stdlib.h>
 
 #ifdef __cplusplus
 extern "C" {