diff --git a/lib/libc/stdio/getc.3 b/lib/libc/stdio/getc.3
index 6b73e492c9a..25c9be41c1b 100644
--- a/lib/libc/stdio/getc.3
+++ b/lib/libc/stdio/getc.3
@@ -58,7 +58,7 @@
 .Ft int
 .Fn getc_unlocked "FILE *stream"
 .Ft int
-.Fn getchar
+.Fn getchar void
 .Ft int
 .Fn getchar_unlocked "void"
 .Ft int
diff --git a/lib/libc/stdio/getwc.3 b/lib/libc/stdio/getwc.3
index 6e4069c59bc..4939ad143c2 100644
--- a/lib/libc/stdio/getwc.3
+++ b/lib/libc/stdio/getwc.3
@@ -56,7 +56,7 @@
 .Ft wint_t
 .Fn getwc "FILE *stream"
 .Ft wint_t
-.Fn getwchar
+.Fn getwchar void
 .Sh DESCRIPTION
 The
 .Fn fgetwc