diff --git a/src/gos/gos_arduino.c b/src/gos/gos_arduino.c
index 60c35cac..4c01695a 100644
--- a/src/gos/gos_arduino.c
+++ b/src/gos/gos_arduino.c
@@ -327,7 +327,7 @@ static thread *Qpop(threadQ * q) {
 	/* These functions are not static to prevent the compiler removing them as functions */
 
 	void get_stack_state(void) {
-		char c;
+		char* c;
 		pframeinfo->localptr = (char *)&c;
 		_setjmp(pframeinfo->cxt);
 	}