diff --git a/include/helpers.h b/include/helpers.h
index 5284f51a..a9896610 100644
--- a/include/helpers.h
+++ b/include/helpers.h
@@ -31,7 +31,7 @@
 	#define attr_(...)
 	// This seems to generate similar code to __builtin_unreachable, despite different semantics
 	// Note that executing this is undefined behavior (declared _Noreturn, but does return)
-	static inline _Noreturn unreachable_(void) {}
+	static inline _Noreturn void unreachable_(void) {}
 #endif
 
 // Use builtins whenever possible, and shim them otherwise