Index: lib/libcapsicum/capsicum_helpers.h
===================================================================
--- lib/libcapsicum/capsicum_helpers.h
+++ lib/libcapsicum/capsicum_helpers.h
@@ -58,9 +58,9 @@
 	    CAP_IOCTL, CAP_SEEK);
 
 	if ((flags & CAPH_READ) != 0)
-		cap_rights_set(&rights, CAP_READ);
+		cap_rights_set(&rights, CAP_READ, CAP_MMAP_R);
 	if ((flags & CAPH_WRITE) != 0)
-		cap_rights_set(&rights, CAP_WRITE);
+		cap_rights_set(&rights, CAP_WRITE, CAP_MMAP_W);
 	if ((flags & CAPH_LOOKUP) != 0)
 		cap_rights_set(&rights, CAP_LOOKUP);