diff --git a/ocrd-tool.json b/ocrd-tool.json
new file mode 120000
index 0000000..f45153c
--- /dev/null
+++ b/ocrd-tool.json
@@ -0,0 +1 @@
+qurator/dinglehopper/ocrd-tool.json
\ No newline at end of file
diff --git a/qurator/dinglehopper/ocrd-tool.json b/qurator/dinglehopper/ocrd-tool.json
index ebb141a..4710f35 100644
--- a/qurator/dinglehopper/ocrd-tool.json
+++ b/qurator/dinglehopper/ocrd-tool.json
@@ -11,6 +11,9 @@
       "output_file_grp": [
         "OCR-D-OCR-EVAL"
       ],
+      "categories": [
+        "Quality assurance"
+      ],
       "steps": [
         "recognition/text-recognition"
       ]