diff --git a/autoload/vsnip/source.vim b/autoload/vsnip/source.vim
index 28df252..c12c487 100644
--- a/autoload/vsnip/source.vim
+++ b/autoload/vsnip/source.vim
@@ -51,6 +51,7 @@ endfunction
 function! vsnip#source#create(path) abort
   try
     let l:file = readfile(a:path)
+    let l:file = filter(l:file, {_, line -> line !~ '^\(\s\+\)\?\/\/' } )
     let l:file = type(l:file) == type([]) ? join(l:file, "\n") : l:file
     let l:file = iconv(l:file, 'utf-8', &encoding)
     let l:json = json_decode(l:file)
diff --git a/autoload/vsnip/source/vscode.vim b/autoload/vsnip/source/vscode.vim
index 18e2d53..65e4616 100644
--- a/autoload/vsnip/source/vscode.vim
+++ b/autoload/vsnip/source/vscode.vim
@@ -41,6 +41,7 @@ function! s:find(languages) abort
         continue
       endif
       let l:package_json = readfile(l:package_json)
+      let l:package_json = filter(l:file, {_, line -> line !~ '^\s\+\/\/' } )
       let l:package_json = type(l:package_json) == type([]) ? join(l:package_json, "\n") : l:package_json
       let l:package_json = iconv(l:package_json, 'utf-8', &encoding)
       let l:package_json = json_decode(l:package_json)