diff --git a/syntax/nimrod.vim b/syntax/nimrod.vim
index 0de7c6b..88f9c72 100644
--- a/syntax/nimrod.vim
+++ b/syntax/nimrod.vim
@@ -185,3 +185,4 @@ endif
 
 let b:current_syntax = "nimrod"
 
+setlocal expandtab  "Make sure that only spaces are used