diff --git a/man3/memcpy.3 b/man3/memcpy.3
index 523465ae8..369f9f9d0 100644
--- a/man3/memcpy.3
+++ b/man3/memcpy.3
@@ -35,7 +35,8 @@ memcpy \- copy memory area
 .nf
 .B #include <string.h>
 .PP
-.BI "void *memcpy(void *" dest ", const void *" src ", size_t " n );
+.BI "void *memcpy(void *restrict " dest ", const void *restrict " src \
+", size_t " n );
 .fi
 .SH DESCRIPTION
 The