diff --git a/man2/mprotect.2 b/man2/mprotect.2
index da08367ba..2e263af1d 100644
--- a/man2/mprotect.2
+++ b/man2/mprotect.2
@@ -207,7 +207,7 @@ main(int argc, char *argv[])
     printf("Start of region:        0x%lx\\n", (long) buffer);
 
     if (mprotect(buffer + pagesize * 2, pagesize,
-                PROT_NONE) == \-1)
+                PROT_READ) == \-1)
         handle_error("mprotect");
 
     for (p = buffer ; ; )