diff --git a/src/MiniDocs/Pandoc.class.st b/src/MiniDocs/Pandoc.class.st
index 34cda62..192ba51 100644
--- a/src/MiniDocs/Pandoc.class.st
+++ b/src/MiniDocs/Pandoc.class.st
@@ -147,17 +147,10 @@ Pandoc class >> markdownToHtmlOnUnix: inputFile [
 	outputFile := inputFile parent / (inputFile basenameWithoutExtension , '.html').
 	outputFile ensureDelete.
 	outputFile ensureCreateFile.
-	OSSUnixSubprocess new
-		command: 'pandoc';
-		arguments: {'-f'. 'markdown+startnum+task_lists'. '--standalone'. '-t'. 'html'. inputFile fullName. 
-			'--output'. outputFile fullName  };
-	redirectStdout;
-	redirectStderr;
-	runAndWaitOnExitDo: [ :process :outString :errString |
-		process isSuccess
-			ifTrue: [ ^ outputFile ]
-			ifFalse: [ ^ inputFile ]
-	]
+	^ GtSubprocessWithInMemoryOutput new
+		shellCommand: 'pandoc -f markdown+startnum+task_lists --standalone -t html ', inputFile fullName, ' --output ', outputFile fullName;
+		runAndWait;
+		stdout
 ]
 
 { #category : #converters }