diff --git a/resources/examples/How_to_use_the_Playground b/resources/examples/How+to+use+the+Playground
similarity index 100%
rename from resources/examples/How_to_use_the_Playground
rename to resources/examples/How+to+use+the+Playground
diff --git a/resources/examples/Local_JSON_to_XML_(fix) b/resources/examples/Local+JSON+to+XML+(fix)
similarity index 100%
rename from resources/examples/Local_JSON_to_XML_(fix)
rename to resources/examples/Local+JSON+to+XML+(fix)
diff --git a/resources/examples/Local_JSON_to_XML_(morph) b/resources/examples/Local+JSON+to+XML+(morph)
similarity index 100%
rename from resources/examples/Local_JSON_to_XML_(morph)
rename to resources/examples/Local+JSON+to+XML+(morph)
diff --git a/resources/examples/OAI-PMH_MODS_to_JSON b/resources/examples/OAI-PMH+MODS+to+JSON
similarity index 100%
rename from resources/examples/OAI-PMH_MODS_to_JSON
rename to resources/examples/OAI-PMH+MODS+to+JSON
diff --git a/resources/examples/Web_MarcXML_to_JSON b/resources/examples/Web+MarcXML+to+JSON
similarity index 100%
rename from resources/examples/Web_MarcXML_to_JSON
rename to resources/examples/Web+MarcXML+to+JSON
diff --git a/resources/examples/experimental/Large_Input_HTTP b/resources/examples/experimental/Large+Input+HTTP
similarity index 100%
rename from resources/examples/experimental/Large_Input_HTTP
rename to resources/examples/experimental/Large+Input+HTTP
diff --git a/resources/examples/experimental/Result_as_file_download b/resources/examples/experimental/Result+as+file+download
similarity index 100%
rename from resources/examples/experimental/Result_as_file_download
rename to resources/examples/experimental/Result+as+file+download
diff --git a/resources/examples/experimental/Web_JSON_to_JSON_(fix) b/resources/examples/experimental/Web+JSON+to+JSON+(fix)
similarity index 100%
rename from resources/examples/experimental/Web_JSON_to_JSON_(fix)
rename to resources/examples/experimental/Web+JSON+to+JSON+(fix)
diff --git a/resources/examples/experimental/Web_Marc21_to_formeta b/resources/examples/experimental/Web+Marc21+to+formeta
similarity index 100%
rename from resources/examples/experimental/Web_Marc21_to_formeta
rename to resources/examples/experimental/Web+Marc21+to+formeta
diff --git a/resources/examples/experimental/Web_Pica-to-MarcXML_(morph) b/resources/examples/experimental/Web+Pica+to+MarcXML+(morph)
similarity index 100%
rename from resources/examples/experimental/Web_Pica-to-MarcXML_(morph)
rename to resources/examples/experimental/Web+Pica+to+MarcXML+(morph)
diff --git a/resources/examples/experimental/Web_Pica_to_formeta b/resources/examples/experimental/Web+Pica+to+formeta
similarity index 100%
rename from resources/examples/experimental/Web_Pica_to_formeta
rename to resources/examples/experimental/Web+Pica+to+formeta
diff --git a/resources/examples/experimental/XML_repeated_fields b/resources/examples/experimental/XML+repeated+fields
similarity index 100%
rename from resources/examples/experimental/XML_repeated_fields
rename to resources/examples/experimental/XML+repeated+fields
diff --git a/src/cljs/metafacture_playground/utils.cljs b/src/cljs/metafacture_playground/utils.cljs
index 31fa705..87bc382 100644
--- a/src/cljs/metafacture_playground/utils.cljs
+++ b/src/cljs/metafacture_playground/utils.cljs
@@ -4,7 +4,7 @@
    [clojure.string :as clj-str]))
 
 (defn display-name [s]
-  (clj-str/replace s "_" " "))
+  (clj-str/replace s "+" " "))
 
 (defn parse-url [href]
   (let [query-params (-> href
diff --git a/test/cljs/metafacture_playground/event_handler_test.cljs b/test/cljs/metafacture_playground/event_handler_test.cljs
index 775d3d4..e799a19 100644
--- a/test/cljs/metafacture_playground/event_handler_test.cljs
+++ b/test/cljs/metafacture_playground/event_handler_test.cljs
@@ -17,7 +17,7 @@
 
 (def example-name "Local JSON to XML (fix)")
 
-(def example-data (-> (rc/inline "examples/Local_JSON_to_XML_(fix)")
+(def example-data (-> (rc/inline "examples/Local+JSON+to+XML+(fix)")
                      utils/parse-url))
 
 ; Initilized db = empty db