diff --git a/sys/kern/uipc_syscalls.c b/sys/kern/uipc_syscalls.c
index 708cefcb6df5..c00fd2d12368 100644
--- a/sys/kern/uipc_syscalls.c
+++ b/sys/kern/uipc_syscalls.c
@@ -2037,20 +2037,12 @@ retry_space:
 				rem = obj->un_pager.vnp.vnp_size -
 				    uap->offset - fsbytes - loopbytes;
 			xfsize = omin(rem, xfsize);
+			xfsize = omin(space - loopbytes, xfsize);
 			if (xfsize <= 0) {
 				VM_OBJECT_UNLOCK(obj);
 				done = 1;		/* all data sent */
 				break;
 			}
-			/*
-			 * Don't overflow the send buffer.
-			 * Stop here and send out what we've
-			 * already got.
-			 */
-			if (space < loopbytes + xfsize) {
-				VM_OBJECT_UNLOCK(obj);
-				break;
-			}
 
 			/*
 			 * Attempt to look up the page.  Allocate