diff --git a/tools/benchmark.lua b/tools/benchmark.lua
index 3cacddb..80f20a6 100644
--- a/tools/benchmark.lua
+++ b/tools/benchmark.lua
@@ -37,7 +37,7 @@ cmd:option("-save_all", 0, 'group -save_info, -save_image and -save_baseline_ima
 cmd:option("-thread", -1, 'number of CPU threads')
 cmd:option("-tta", 0, 'use tta')
 cmd:option("-tta_level", 8, 'tta level')
-cmd:option("-crop_size", 128, 'patch size per process')
+cmd:option("-crop_size", 256, 'patch size per process')
 cmd:option("-batch_size", 1, 'batch_size')
 cmd:option("-force_cudnn", 0, 'use cuDNN backend')
 cmd:option("-yuv420", 0, 'use yuv420 jpeg')
diff --git a/waifu2x.lua b/waifu2x.lua
index f079c23..f22ef1e 100644
--- a/waifu2x.lua
+++ b/waifu2x.lua
@@ -259,7 +259,7 @@ local function waifu2x()
    cmd:option("-m", "noise_scale", 'method (noise|scale|noise_scale|user)')
    cmd:option("-method", "", 'same as -m')
    cmd:option("-noise_level", 1, '(1|2|3)')
-   cmd:option("-crop_size", 128, 'patch size per process')
+   cmd:option("-crop_size", 256, 'patch size per process')
    cmd:option("-batch_size", 1, 'batch_size')
    cmd:option("-resume", 0, "skip existing files (0|1)")
    cmd:option("-thread", -1, "number of CPU threads")
diff --git a/web.lua b/web.lua
index f894a81..2001afc 100644
--- a/web.lua
+++ b/web.lua
@@ -27,7 +27,7 @@ cmd:text("Options:")
 cmd:option("-port", 8812, 'listen port')
 cmd:option("-gpu", 1, 'Device ID')
 cmd:option("-enable_tta", 0, 'enable TTA query(0|1)')
-cmd:option("-crop_size", 128, 'patch size per process')
+cmd:option("-crop_size", 256, 'patch size per process')
 cmd:option("-batch_size", 1, 'batch size')
 cmd:option("-thread", -1, 'number of CPU threads')
 cmd:option("-force_cudnn", 0, 'use cuDNN backend (0|1)')