diff --git a/main/src/com/google/refine/importers/BinaryFormatGuesser.java b/main/src/com/google/refine/importers/BinaryFormatGuesser.java
new file mode 100644
index 000000000..175ee11af
--- /dev/null
+++ b/main/src/com/google/refine/importers/BinaryFormatGuesser.java
@@ -0,0 +1,16 @@
+package com.google.refine.importers;
+
+import java.io.File;
+
+import com.google.refine.importing.FormatGuesser;
+
+public class BinaryFormatGuesser implements FormatGuesser {
+
+    @Override
+    public String guess(File file, String encoding, String seedFormat) {
+
+        // TODO: Guess based on sniffing magic numbers
+        
+        return null;
+    }
+}
diff --git a/main/webapp/modules/core/MOD-INF/controller.js b/main/webapp/modules/core/MOD-INF/controller.js
index 4528ca2bc..8f180da22 100644
--- a/main/webapp/modules/core/MOD-INF/controller.js
+++ b/main/webapp/modules/core/MOD-INF/controller.js
@@ -204,11 +204,10 @@ function registerImporting() {
 
   IM.registerFormat("text/xml", "XML files", "XmlParserUI", new Packages.com.google.refine.importers.XmlImporter());
   IM.registerFormat("text/xml/xlsx", "Excel (.xlsx) files", "ExcelParserUI", new Packages.com.google.refine.importers.ExcelImporter());
-  // TODO: Can we get away with just reusing Excel importer UI?
   IM.registerFormat("text/xml/ods", "Open Document Format spreadsheets (.ods)", "ExcelParserUI", new Packages.com.google.refine.importers.OdsImporter());
   IM.registerFormat("text/xml/rdf", "RDF/XML files", "RdfTriplesParserUI", new Packages.com.google.refine.importers.RdfXmlTripleImporter());
   IM.registerFormat("text/json", "JSON files", "JsonParserUI", new Packages.com.google.refine.importers.JsonImporter());
-  IM.registerFormat("text/marc", "MARC files");
+  IM.registerFormat("text/marc", "MARC files", "XmlParserUI", new Packages.com.google.refine.importers.MarcImporter());
 
   IM.registerFormat("binary", "Binary files"); // generic format, no parser to handle it
   IM.registerFormat("binary/xls", "Excel files", "ExcelParserUI", new Packages.com.google.refine.importers.ExcelImporter());