diff --git a/src/flux/stores/file-download-store.coffee b/src/flux/stores/file-download-store.coffee
index a76710c18..163fbc80e 100644
--- a/src/flux/stores/file-download-store.coffee
+++ b/src/flux/stores/file-download-store.coffee
@@ -128,7 +128,7 @@ FileDownloadStore = Reflux.createStore
   pathForFile: (file) ->
     return undefined unless file
 
-    filesafeName = file.displayName().replace(RegExpUtils.illegialPathCharactersRegexp(), '-')
+    filesafeName = file.displayName().replace(RegExpUtils.illegalPathCharactersRegexp(), '-')
     path.join(@_downloadDirectory, file.id, filesafeName)
 
   downloadDataForFile: (fileId) ->
diff --git a/src/regexp-utils.coffee b/src/regexp-utils.coffee
index 364db3788..14756e9e1 100644
--- a/src/regexp-utils.coffee
+++ b/src/regexp-utils.coffee
@@ -33,7 +33,7 @@ RegExpUtils =
   # https://regex101.com/r/pZ6zF0/1
   functionArgs: -> /\(\s*([^)]+?)\s*\)/
 
-  illegialPathCharactersRegexp: ->
+  illegalPathCharactersRegexp: ->
     #https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx
     /[\\\/:|?*><"]/g