diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0053a4de..cb3237c8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -155,8 +155,8 @@ else()
 
   install(TARGETS   silice                RUNTIME     DESTINATION bin/)
   install(TARGETS   libsilice             ARCHIVE     DESTINATION bin/)
-  install(FILES     bin/silice-make.py    PERMISSIONS WORLD_EXECUTE OWNER_WRITE WORLD_READ DESTINATION bin/)
-  install(FILES     bin/report-cycles.py  PERMISSIONS WORLD_EXECUTE OWNER_WRITE WORLD_READ DESTINATION bin/)
+  install(PROGRAMS  bin/silice-make.py    DESTINATION bin/)
+  install(PROGRAMS  bin/report-cycles.py  DESTINATION bin/)
   install(FILES     projects/ice-v/CPUs/ice-v.si      DESTINATION share/silice/projects/ice-v/CPUs/)
   install(FILES     projects/ice-v/CPUs/ice-v-dual.si DESTINATION share/silice/projects/ice-v/CPUs/)
   install(DIRECTORY frameworks            DESTINATION share/silice/ USE_SOURCE_PERMISSIONS)