diff --git a/man3/getservent_r.3 b/man3/getservent_r.3
index ad7fd22e4..c73a93afc 100644
--- a/man3/getservent_r.3
+++ b/man3/getservent_r.3
@@ -31,14 +31,19 @@ service entry (reentrant)
 .nf
 .B #include <netdb.h>
 .PP
-.BI "int getservent_r(struct servent *" result_buf ", char *" buf ,
-.BI "                size_t " buflen ", struct servent **" result );
-.BI "int getservbyname_r(const char *" name ", const char *" proto ,
-.BI "                struct servent *" result_buf ", char *" buf ,
-.BI "                size_t " buflen ", struct servent **" result );
-.BI "int getservbyport_r(int " port ", const char *" proto ,
-.BI "                struct servent *" result_buf ", char *" buf ,
-.BI "                size_t " buflen ", struct servent **" result );
+.BI "int getservent_r(struct servent *restrict " result_buf ,
+.BI "                 char *restrict " buf ", size_t " buflen ,
+.BI "                 struct servent **restrict " result );
+.BI "int getservbyname_r(const char *restrict " name ,
+.BI "                 const char *restrict " proto ,
+.BI "                 struct servent *restrict " result_buf ,
+.BI "                 char *restrict " buf ", size_t " buflen ,
+.BI "                 struct servent **restrict " result );
+.BI "int getservbyport_r(int " port ,
+.BI "                 const char *restrict " proto ,
+.BI "                 struct servent *restrict " result_buf ,
+.BI "                 char *restrict " buf ", size_t " buflen ,
+.BI "                 struct servent **restrict " result );
 .PP
 .fi
 .RS -4