diff --git a/lib/libc/locale/btowc.3 b/lib/libc/locale/btowc.3
index d9c3e9cf34ee..2d8cb493351b 100644
--- a/lib/libc/locale/btowc.3
+++ b/lib/libc/locale/btowc.3
@@ -42,9 +42,9 @@
 .In wchar.h
 .In xlocale.h
 .Ft wint_t
-.Fn btowc "int c"
+.Fn btowc_l "int c" "locale_t loc"
 .Ft int
-.Fn wctob "wint_t c"
+.Fn wctob_l "wint_t c" "locale_t loc"
 .Sh DESCRIPTION
 The
 .Fn btowc
diff --git a/lib/libc/locale/isblank.3 b/lib/libc/locale/isblank.3
index 5542280eb36f..731a88b5bd81 100644
--- a/lib/libc/locale/isblank.3
+++ b/lib/libc/locale/isblank.3
@@ -41,7 +41,7 @@
 .Ft int
 .Fn isblank "int c"
 .Ft int
-.Fn isblank "int c" "locale_t loc"
+.Fn isblank_l "int c" "locale_t loc"
 .Sh DESCRIPTION
 The
 .Fn isblank