diff --git a/syntax/r.json b/syntax/r.json
index 99d1efc8f..11b528274 100644
--- a/syntax/r.json
+++ b/syntax/r.json
@@ -1,9 +1,4 @@
 {
-    "information_for_contributors": [
-        "This file has been converted from https://github.com/randy3k/R-Box/blob/master/syntax/R%20Extended.sublime-syntax",
-        "If you want to provide a fix or improvement, please create a pull request against the original repository.",
-        "Once accepted there, we are happy to receive an update request."
-    ],
     "fileTypes": [
         "R",
         "r",
@@ -340,8 +335,8 @@
         "function-declarations": {
             "patterns": [
                 {
-                    "begin": "^\\s*([a-zA-Z._][\\w.:]*)\\s*(<<?-|=)\\s*(?=function\\s*\\()",
-                    "beginCaptures": {
+                    "match": "((?:`[^`\\\\]*(?:\\\\.[^`\\\\]*)*`)|(?:[[:alpha:].][[:alnum:]._]*))\\s*(<?<-|=(?!=))\\s*(function)",
+                    "captures": {
                         "1": {
                             "name": "entity.name.function.r"
                         },
@@ -352,7 +347,6 @@
                             "name": "keyword.control.r"
                         }
                     },
-                    "end": "(?<=\\))",
                     "name": "meta.function.r",
                     "patterns": [
                         {