diff --git a/sys/src/cmd/cwfs/malloc.c b/sys/src/cmd/cwfs/malloc.c
index 048a81209..aa7debd27 100644
--- a/sys/src/cmd/cwfs/malloc.c
+++ b/sys/src/cmd/cwfs/malloc.c
@@ -28,7 +28,7 @@ memsize(void)
 			}
 		}
 		Bterm(bp);
-		if (pgsize > 0 && userused > userpgs)
+		if (pgsize > 0 && userused < userpgs)
 			return (userpgs - userused)*pgsize;
 	}
 	return 64*MB;