diff --git a/src/sysinput.c b/src/sysinput.c
index 503c2f3..055a86f 100644
--- a/src/sysinput.c
+++ b/src/sysinput.c
@@ -5,7 +5,7 @@
 #include "msg_queue.h"
 #include "gpio.h"
 
-volatile PMSG_QUEUE Sys_Queue = NULL;
+MSG_QUEUE volatile *Sys_Queue = NULL;
 
 static pthread_t ithread;
 static volatile sig_atomic_t running = 1;
diff --git a/src/sysinput.h b/src/sysinput.h
index bc08960..7142f4b 100644
--- a/src/sysinput.h
+++ b/src/sysinput.h
@@ -3,7 +3,7 @@
 
 #include "msg_queue.h"
 
-extern volatile PMSG_QUEUE Sys_Queue;
+extern MSG_QUEUE volatile *Sys_Queue;
 
 extern int SysEnableInput(void);
 extern void SysDisableInput(void);