diff --git a/langpacks.spec b/langpacks.spec
index 0fa0b73..e1b41c3 100644
--- a/langpacks.spec
+++ b/langpacks.spec
@@ -1397,7 +1397,7 @@ This package provides %{_langname} langpacks meta-package.
 
 ]]
   rpm.define("_lang " .. lang)
-  rpm.define("_fontlang " .. fontlang)
+  rpm.define("_fontlang " .. string.gsub(fontlang, "-", "_"))
   rpm.define("_langname " .. langname)
   if deps ~= "" then
     rpm.define("_req %{expand:" .. deps .. "}")