diff --git a/lua/advdupe2/cl_file.lua b/lua/advdupe2/cl_file.lua
index fbfb36d..a6716e5 100644
--- a/lua/advdupe2/cl_file.lua
+++ b/lua/advdupe2/cl_file.lua
@@ -1,3 +1,13 @@
+local invalidCharacters = { "\"", ":"}
+function AdvDupe2.SanitizeFilename(filename)
+	for i=1, #invalidCharacters do
+		filename = string.gsub(filename, invalidCharacters[i], "_")
+	end
+	filename = string.gsub(filename, "%s+", " ")
+
+	return filename
+end
+
 local function AdvDupe2_ReceiveFile(len, ply)
 	local AutoSave = net.ReadUInt(8) == 1
 
@@ -18,6 +28,7 @@ local function AdvDupe2_ReceiveFile(len, ply)
 			path = AdvDupe2.GetFilename(AdvDupe2.SavePath)
 		end
 
+		path = AdvDupe2.SanitizeFilename(path)
 		local dupefile = file.Open(path, "wb", "DATA")
 		if(!dupefile)then
 			AdvDupe2.Notify("File was not saved!",NOTIFY_ERROR,5)
diff --git a/lua/advdupe2/file_browser.lua b/lua/advdupe2/file_browser.lua
index f68c9cf..6f42282 100644
--- a/lua/advdupe2/file_browser.lua
+++ b/lua/advdupe2/file_browser.lua
@@ -306,6 +306,8 @@ local function RenameFileCl(node, name)
 		AdvDupe2.Notify("Rename limit exceeded, could not rename.", NOTIFY_ERROR)
 		return
 	end
+
+	FilePath = AdvDupe2.SanitizeFilename(FilePath)
 	file.Write(FilePath, File)
 	if (file.Exists(FilePath, "DATA")) then
 		file.Delete(tempFilePath .. ".txt")
diff --git a/lua/advdupe2/sh_codec.lua b/lua/advdupe2/sh_codec.lua
index 0fe621f..438f31c 100644
--- a/lua/advdupe2/sh_codec.lua
+++ b/lua/advdupe2/sh_codec.lua
@@ -524,6 +524,8 @@ if CLIENT then
 		local readFileName = "advdupe2/"..arg[1]
 		local writeFileName = "advdupe2/"..string.StripExtension(arg[1])..".json"
 
+		writeFileName = AdvDupe2.SanitizeFilename(writeFileName)
+
 		local readFile = file.Open(readFileName, "rb", "DATA")
 		if not readFile then print("File could not be read or found! ("..readFileName..")") return end
 		local readData = readFile:Read(readFile:Size())