diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/schema/EntitySchemaManagement.java b/src/main/java/org/gcube/informationsystem/resourceregistry/schema/EntitySchemaManagement.java
deleted file mode 100644
index cba0dae..0000000
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/schema/EntitySchemaManagement.java
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * 
- */
-package org.gcube.informationsystem.resourceregistry.schema;
-
-/**
- * @author Luca Frosini (ISTI - CNR)
- *
- */
-public class EntitySchemaManagement {
-
-}
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/schema/SchemaManagementImpl.java b/src/main/java/org/gcube/informationsystem/resourceregistry/schema/SchemaManagementImpl.java
index 24d0eda..84acb12 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/schema/SchemaManagementImpl.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/schema/SchemaManagementImpl.java
@@ -67,7 +67,7 @@ public class SchemaManagementImpl implements SchemaManagement {
 		try {
 			OClass oClass = oSchema.getClass(type);
 			if (oClass == null) {
-				throw new SchemaNotFoundException(type + "was not registered");
+				throw new SchemaNotFoundException(type + " was not registered");
 			}
 			if (baseType != null && type.compareTo(baseType) != 0) {
 				if (!oClass.isSubClassOf(baseType)) {