diff --git a/test/vfd_swmr_common.c b/test/vfd_swmr_common.c
index bb0f2a48cf..036308ade4 100644
--- a/test/vfd_swmr_common.c
+++ b/test/vfd_swmr_common.c
@@ -147,7 +147,8 @@ await_signal(hid_t fid)
         const int rc = sigtimedwait(&sleepset, NULL, &tick);
 
         if (rc != -1) {
-            fprintf(stderr, "Received %s, wrapping things up.\n", strsignal(rc));
+            fprintf(stderr, "Received %s, wrapping things up.\n",
+                strsignal(rc));
             break;
         } else if (rc == -1 && errno == EAGAIN) {
             estack_state_t es;