1 files changed, 2 insertions, 0 deletions
diff --git a/src/nvim/spell.c b/src/nvim/spell.c
index 40bb882948..760ac2e6c1 100644
--- a/src/nvim/spell.c
+++ b/src/nvim/spell.c
@@ -2305,6 +2305,7 @@ static int find_region(char_u *rp, char_u *region)
 ///
 /// @returns  Case type of word
 int captype(char_u *word, char_u *end)
+  FUNC_ATTR_NONNULL_ARG(1)
 {
   char_u      *p;
   int c;
@@ -2355,6 +2356,7 @@ int captype(char_u *word, char_u *end)
 // capital.  So that make_case_word() can turn WOrd into Word.
 // Add ALLCAP for "WOrD".
 static int badword_captype(char_u *word, char_u *end)
+  FUNC_ATTR_NONNULL_ALL
 {
   int flags = captype(word, end);
   int c;