diff --git a/src/main/java/org/olat/modules/qpool/manager/QuestionItemDocumentFactory.java b/src/main/java/org/olat/modules/qpool/manager/QuestionItemDocumentFactory.java
index 3a17d286e35e6c9b165424b44c01d2b16d475209..4a042dac5b7cdbb982aaa8ca10a91468cc55cca1 100644
--- a/src/main/java/org/olat/modules/qpool/manager/QuestionItemDocumentFactory.java
+++ b/src/main/java/org/olat/modules/qpool/manager/QuestionItemDocumentFactory.java
@@ -196,7 +196,7 @@ public class QuestionItemDocumentFactory {
 			}
 			TaxonomyLevel taxonomyLevel = item.getTaxonomyLevel();
 			if (taxonomyLevel != null) {
-				String materializedPathKeys = taxonomyLevel.getMaterializedPathKeys().replaceAll(" ", "_").replaceAll("/", "_");
+				String materializedPathKeys = taxonomyLevel.getMaterializedPathKeys().replaceAll("/", "_");
 				TextField field = new TextField(QItemDocument.TAXONOMIC_PATH_FIELD, materializedPathKeys, Field.Store.YES);
 				document.add(field);
 			}
diff --git a/src/main/java/org/olat/modules/qpool/ui/metadata/ExtendedSearchController.java b/src/main/java/org/olat/modules/qpool/ui/metadata/ExtendedSearchController.java
index 83160bd4b433d89555ab27a173eb4918727c1a8f..9db8bfd5b4139bb92f4c12a42abeaa1d944b7e32 100644
--- a/src/main/java/org/olat/modules/qpool/ui/metadata/ExtendedSearchController.java
+++ b/src/main/java/org/olat/modules/qpool/ui/metadata/ExtendedSearchController.java
@@ -438,7 +438,7 @@ public class ExtendedSearchController extends FormBasicController implements Ext
 
 		@Override
 		public String getValue(FormItem item) {
-			return super.getValue(item).replaceAll(" ", "_").replaceAll("/", "_") + "*";
+			return super.getValue(item).replaceAll("/", "_") + "*";
 		}
 		
 	}