diff --git a/src/nvim/regexp_nfa.c b/src/nvim/regexp_nfa.c
index ecc8a4703c..7e316624f8 100644
--- a/src/nvim/regexp_nfa.c
+++ b/src/nvim/regexp_nfa.c
@@ -1282,7 +1282,6 @@ static void nfa_emit_equi_class(int c)
 
   EMIT2(c);
 #undef EMIT2
-#undef EMIT2
 }
 
 /*