diff --git a/src/fd.c b/src/fd.c
index 2af83f3..7c90691 100644
--- a/src/fd.c
+++ b/src/fd.c
@@ -456,6 +456,7 @@
 			if (locked)
 				HA_SPIN_UNLOCK(FD_LOCK, &fdtab[fd].lock);
 		}
+		ti->flags &= ~TI_FL_STUCK; // this thread is still running
 	}
 }