diff --git a/libs/lua-platform-info/files/ar71xx/generic/platform_info.lua b/libs/lua-platform-info/files/ar71xx/generic/platform_info.lua
index 71ee32a..0ccefdf 100644
--- a/libs/lua-platform-info/files/ar71xx/generic/platform_info.lua
+++ b/libs/lua-platform-info/files/ar71xx/generic/platform_info.lua
@@ -33,5 +33,5 @@ end
 
 -- The image name for sysupgrades
 function get_image_name()
-   return (model:lower():gsub('[^%w]+', '-'):gsub('%-+$', ''))
+   return (model:lower():gsub('[^%w%.]+', '-'):gsub('%.+', '.'):gsub('[%-%.]*%-[%-%.]*', '-'):gsub('%-+$', ''))
 end
diff --git a/libs/lua-platform-info/files/mpc85xx/generic/platform_info.lua b/libs/lua-platform-info/files/mpc85xx/generic/platform_info.lua
index 970c852..931e347 100644
--- a/libs/lua-platform-info/files/mpc85xx/generic/platform_info.lua
+++ b/libs/lua-platform-info/files/mpc85xx/generic/platform_info.lua
@@ -33,5 +33,5 @@ end
 
 -- The image name for sysupgrades
 function get_image_name()
-   return (model:lower():gsub('[^%w]+', '-'):gsub('%-+$', ''))
+   return (model:lower():gsub('[^%w%.]+', '-'):gsub('%.+', '.'):gsub('[%-%.]*%-[%-%.]*', '-'):gsub('%-+$', ''))
 end