diff --git a/src/nvim/ex_getln.c b/src/nvim/ex_getln.c
index f9ca7bfa42a438..940f446a7b662e 100644
--- a/src/nvim/ex_getln.c
+++ b/src/nvim/ex_getln.c
@@ -5193,7 +5193,7 @@ ExpandFromContext (
  * obtain strings, one by one.	The strings are matched against a regexp
  * program.  Matching strings are copied into an array, which is returned.
  */
-void ExpandGeneric(
+static void ExpandGeneric(
     expand_T    *xp,
     regmatch_T  *regmatch,
     int         *num_file,