diff --git a/man3/wcscat.3 b/man3/wcscat.3
index c756337f1..acfb8d43e 100644
--- a/man3/wcscat.3
+++ b/man3/wcscat.3
@@ -20,7 +20,8 @@ wcscat \- concatenate two wide-character strings
 .nf
 .B #include <wchar.h>
 .PP
-.BI "wchar_t *wcscat(wchar_t *" dest ", const wchar_t *" src );
+.BI "wchar_t *wcscat(wchar_t *restrict " dest \
+", const wchar_t *restrict " src );
 .fi
 .SH DESCRIPTION
 The