diff --git a/mkwpp-parser/script.js b/mkwpp-parser/script.js
index 91f1c2f..7e6efb0 100644
--- a/mkwpp-parser/script.js
+++ b/mkwpp-parser/script.js
@@ -228,12 +228,12 @@ document.getElementById("readInput").addEventListener("click", async function()
             let token = trackData[i];
             if (token.startsWith("n")) {
                 nosc = true;
-                trackData = trackData.splice(i,1);
+                trackData.splice(i,1);
                 i--;
             }
             if (token.startsWith("f") || token.startsWith("l")) {
                 flap = true;
-                trackData = trackData.splice(i,1);
+                trackData.splice(i,1);
                 i--;
             }
         }