diff --git a/man3/stpcpy.3 b/man3/stpcpy.3
index 448b53955..e978dfb3e 100644
--- a/man3/stpcpy.3
+++ b/man3/stpcpy.3
@@ -29,7 +29,7 @@ stpcpy \- copy a string returning a pointer to its end
 .nf
 .B #include <string.h>
 .PP
-.BI "char *stpcpy(char *" dest ", const char *" src );
+.BI "char *stpcpy(char *restrict " dest ", const char *restrict " src );
 .fi
 .PP
 .RS -4