diff --git a/src/intl/charsets.c b/src/intl/charsets.c
index f183ecd9..cabbced1 100644
--- a/src/intl/charsets.c
+++ b/src/intl/charsets.c
@@ -205,7 +205,9 @@ struct {
 	unicode_val_T *list;
 } codepoints;
 
-int is_codepoint_supported(unicode_val_T u) {
+static int
+is_codepoint_supported(unicode_val_T u)
+{
 	int first, last, middle;
 
 	if (codepoints.size == -1)
@@ -227,7 +229,9 @@ int is_codepoint_supported(unicode_val_T u) {
 	return 0;
 }
 
-int codepoint_replacement(unicode_val_T u) {
+int
+codepoint_replacement(unicode_val_T u)
+{
 	int s;
 
 	if (is_codepoint_supported(u))
diff --git a/src/intl/charsets.h b/src/intl/charsets.h
index caf2e310..7cfe3fc5 100644
--- a/src/intl/charsets.h
+++ b/src/intl/charsets.h
@@ -160,7 +160,6 @@ char *utf8_step_forward(char *, char *,
 				 int, enum utf8_step, int *);
 char *utf8_step_backward(char *, char *,
 				  int, enum utf8_step, int *);
-int is_codepoint_supported(unicode_val_T u);
 int codepoint_replacement(unicode_val_T u);
 int unicode_to_cell(unicode_val_T);
 unicode_val_T unicode_fold_label_case(unicode_val_T);