diff --git a/sys/include/net/sock/tcp.h b/sys/include/net/sock/tcp.h
index 57ae3ad328..1812463d43 100644
--- a/sys/include/net/sock/tcp.h
+++ b/sys/include/net/sock/tcp.h
@@ -541,11 +541,11 @@ ssize_t sock_tcp_read(sock_tcp_t *sock, void *data, size_t max_len,
  */
 ssize_t sock_tcp_write(sock_tcp_t *sock, const void *data, size_t len);
 
-#include "sock_types.h"
-
 #ifdef __cplusplus
 }
 #endif
 
+#include "sock_types.h"
+
 #endif /* NET_SOCK_TCP_H */
 /** @} */