diff --git a/funi.ts b/funi.ts
index 3a2b859..4c49a6b 100644
--- a/funi.ts
+++ b/funi.ts
@@ -720,14 +720,6 @@ async function downloadStreams(epsiode: FunimationMediaDownload){
   if ( argv.novids ){
     console.log('[INFO] Video not downloaded. Skip muxing video.');
   }
-    
-  // mergers
-  if(!argv.mp4 && !mergerBin.MKVmerge){
-    console.log('[WARN] MKVMerge not found...');
-  }
-  if(!mergerBin.MKVmerge && !mergerBin.FFmpeg || argv.mp4 && !mergerBin.MKVmerge){
-    console.log('[WARN] FFmpeg not found...');
-  }
 
   const ffext = !argv.mp4 ? 'mkv' : 'mp4';
   const mergeInstance = new merger({
@@ -747,7 +739,7 @@ async function downloadStreams(epsiode: FunimationMediaDownload){
     skipSubMux: argv.skipSubMux
   });
 
-  if(!argv.mp4 && mergerBin.MKVmerge){
+  if(mergerBin.MKVmerge){
     const command = mergeInstance.MkvMerge();
     shlp.exec('mkvmerge', `"${mergerBin.MKVmerge}"`, command);
   }
diff --git a/modules/module.merger.ts b/modules/module.merger.ts
index 547c209..6f3e018 100644
--- a/modules/module.merger.ts
+++ b/modules/module.merger.ts
@@ -196,6 +196,7 @@ class Merger {
     }
     if (this.options.fonts && this.options.fonts.length > 0) {
       for (const f of this.options.fonts) {
+        console.log(f.path);
         args.push('--attachment-name', f.name);
         args.push('--attachment-mime-type', f.mime);
         args.push('--attach-file', f.path);
@@ -212,24 +213,25 @@ class Merger {
   public static checkMerger(bin: {
     mkvmerge?: string,
     ffmpeg?: string
-  }, useMP4format: boolean) {
-    const merger: {
-      MKVmerge: undefined|string|false,
-      FFmpeg: undefined|string|false
-    } = {
-      MKVmerge: bin.mkvmerge,
-      FFmpeg: bin.ffmpeg,
-    };
-    if( !useMP4format && !merger.MKVmerge ){
-      console.log('[WARN] MKVMerge not found, skip using this...');
-      merger.MKVmerge = false;
+  }, useMP4format: boolean) : {
+    MKVmerge?: string,
+    FFmpeg?: string
+  } {
+    if (useMP4format && bin.ffmpeg) {
+      return {
+        FFmpeg: bin.ffmpeg
+      }
+    } else if (!useMP4format && (bin.mkvmerge || bin.ffmpeg)) {
+      return {
+        MKVmerge: bin.mkvmerge,
+        FFmpeg: bin.ffmpeg
+      }
+    } else if (useMP4format) {
+      console.log('[WARN] FFmpeg not found, skip muxing...');
+    } else if (!bin.mkvmerge) {
+      console.log('[WARN] MKVMerge not found, skip muxing...');
     }
-    if( !merger.MKVmerge && !merger.FFmpeg || useMP4format && !merger.FFmpeg ){
-      console.log('[WARN] FFmpeg not found, skip using this...');
-      merger.FFmpeg = false;
-    }
-    return merger;
-
+    return {};
   }
 
   public static makeFontsList (fontsDir: string, subs: {