diff --git a/editors/vim/syntax/cabal.vim b/editors/vim/syntax/cabal.vim
index 92fda0e9b7a..2e578307a7e 100644
--- a/editors/vim/syntax/cabal.vim
+++ b/editors/vim/syntax/cabal.vim
@@ -363,6 +363,7 @@ syn keyword cabalExtension contained
   \ NoMonoLocalBinds
   \ NoMonoPatBinds
   \ NoMonomorphismRestriction
+  \ NoMultilineStrings
   \ NoMultiParamTypeClasses
   \ NoMultiWayIf
   \ NoNPlusKPatterns