diff --git a/src/memline.c b/src/memline.c
index 969e1e2..1cb1bb0 100644
--- a/src/memline.c
+++ b/src/memline.c
@@ -728,7 +728,7 @@
 	{
 	    int fdflags = fcntl(mfp->mf_fd, F_GETFD);
 	    if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0)
-		fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC);
+		(void)fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC);
 	}
 #endif
     }