diff --git a/karaoke-adjust-1sec.lua b/karaoke-adjust-1sec.lua
index cd98d18..73f01af 100644
--- a/karaoke-adjust-1sec.lua
+++ b/karaoke-adjust-1sec.lua
@@ -127,7 +127,7 @@ function mugenizer(subs)
             template_present = true
         end
 
-        if line.class == "dialogue" and not line.comment then
+        if line.class == "dialogue" and not line.comment and line.effect ~= "fx" then
             if first == nil then
                 first = i
             end