diff --git a/lasmerge_wrapper.ps1 b/lasmerge_wrapper.ps1
index 615b97d..78bff78 100644
--- a/lasmerge_wrapper.ps1
+++ b/lasmerge_wrapper.ps1
@@ -24,9 +24,9 @@ Get-ChildItem $lasFilePath\* -Include *.las, *.laz |
         Write-Host "Starting $fileNameFullGround"       
 
         # generating output filename
-        $outputFilename = $_.Name.split(".la")[0] # will be used to match object file name
+        $outputFilename = $_.Name.split("_BE")[0] # will be used to match object file name
         $outputFile = Join-Path $lasFilePathGround $outputFilename
-        $outputFile = Join-Path $outputFile "laz"
+        $outputFile = Join-Path $outputFile ".laz"
 
         # getting object las filename 
         Get-ChildItem $lasFilePathObject\* -Include *.las, *.laz | ForEach-Object {
@@ -48,7 +48,7 @@ Get-ChildItem $lasFilePath\* -Include *.las, *.laz |
             $Process = Start-Process -FilePath $lasmerge -ArgumentList $allArguments -Wait #-ArgumentList "$allArguments" -Wait
         }
         Catch{
-            Write-Host "Failed with files " $allArguments
+            Write-Host "Failed with files $fileNameFullGround $fileNameObject"
             Continue
         }           
    }