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-rw-r--r--libs/libgui/msg.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/libs/libgui/msg.h b/libs/libgui/msg.h
index 65fc640..c25e95e 100644
--- a/libs/libgui/msg.h
+++ b/libs/libgui/msg.h
@@ -66,7 +66,7 @@ enum message_type {
GUI_KEYBOARD,
};
-res msg_send(u32 pid, enum message_type type, void *data, u32 size);
-res msg_receive(void *buf, u32 size);
+res msg_send(u32 pid, enum message_type type, void *data, u32 size) NONNULL;
+res msg_receive(void *buf, u32 size) NONNULL;
#endif