diff --git a/DynareFlex.ll b/DynareFlex.ll
index 2ed5b6f7998dbdf72d77fdc469871a0c3592a715..8e661a032e8aa50a154d2df11cd45cdcbd772079 100644
--- a/DynareFlex.ll
+++ b/DynareFlex.ll
@@ -581,6 +581,7 @@ string eofbuff;
  /* Add the native statement */
 <NATIVE>{
   [^/%*\n\.\'\"]*             |
+  \'                          |
   \'[^\'\n]*\'                |
   \"[^\"\n]*\"                |
   \.{1,2}                     |