diff --git a/Project.toml b/Project.toml
index 305a2a1..92dcc2a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Stuffing"
 uuid = "4175e07e-e5b7-423e-8796-3ea7f6d48281"
 authors = ["guoyongzhi <guo-yong-zhi@outlook.com>"]
-version = "0.8"
+version = "0.8.1"
 
 [deps]
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
diff --git a/src/qtrees.jl b/src/qtrees.jl
index d311d96..5e778dc 100644
--- a/src/qtrees.jl
+++ b/src/qtrees.jl
@@ -187,7 +187,7 @@ function ShiftedQTree(pic::PaddedMat{T}) where T
 end
 function ShiftedQTree(pic::AbstractMatrix{UInt8}, sz::Integer; default=EMPTY)
     @assert isinteger(log2(sz))
-    @assert sz >= size(pic, 1) && sz >= size(pic, 2)
+    (sz >= size(pic, 1) && sz >= size(pic, 2)) || (@warn "ShiftedQTree cut off: $(size(pic))>$sz")
     ShiftedQTree(PaddedMat(pic, (sz, sz), default=default))
 end
 function ShiftedQTree(pic::AbstractMatrix{UInt8}; default=EMPTY)