diff --git a/man3/pthread_attr_setstack.3 b/man3/pthread_attr_setstack.3
index 23b95cb32..6d0488a8b 100644
--- a/man3/pthread_attr_setstack.3
+++ b/man3/pthread_attr_setstack.3
@@ -33,8 +33,9 @@ attributes in thread attributes object
 .PP
 .BI "int pthread_attr_setstack(pthread_attr_t *" attr ,
 .BI "                          void *" stackaddr ", size_t " stacksize );
-.BI "int pthread_attr_getstack(const pthread_attr_t *" attr ,
-.BI "                          void **" stackaddr ", size_t *" stacksize );
+.BI "int pthread_attr_getstack(const pthread_attr_t *restrict " attr ,
+.BI "                          void **restrict " stackaddr ,
+.BI "                          size_t *restrict " stacksize );
 .PP
 Compile and link with \fI\-pthread\fP.
 .fi