1 files changed, 1 insertions, 1 deletions
diff --git a/cont.c b/cont.c
index 82e2340c3b..f48fd2e52b 100644
--- a/cont.c
+++ b/cont.c
@@ -222,7 +222,7 @@ rb_ec_verify(const rb_execution_context_t *ec)
 static void
 fiber_status_set(const rb_fiber_t *fib, enum fiber_status s)
 {
-    if (0) fprintf(stderr, "fib: %p, status: %s -> %s\n", fib, fiber_status_name(fib->status), fiber_status_name(s));
+    if (0) fprintf(stderr, "fib: %p, status: %s -> %s\n", (void *)fib, fiber_status_name(fib->status), fiber_status_name(s));
     VM_ASSERT(!FIBER_TERMINATED_P(fib));
     VM_ASSERT(fib->status != s);
     fiber_verify(fib);