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-rw-r--r--modules/luci-base/luasrc/util.lua2
1 files changed, 1 insertions, 1 deletions
diff --git a/modules/luci-base/luasrc/util.lua b/modules/luci-base/luasrc/util.lua
index 8b28b1752d..dcf8230b3e 100644
--- a/modules/luci-base/luasrc/util.lua
+++ b/modules/luci-base/luasrc/util.lua
@@ -643,7 +643,7 @@ function serialize_json(x, cb)
push(tostring(x))
end
else
- push('"%s"' % tostring(x):gsub('["%z\1-\31]',
+ push('"%s"' % tostring(x):gsub('["%z\1-\31\\]',
function(c) return '\\u%04x' % c:byte(1) end))
end