diff --git a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/SQLServerUtils.java b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/SQLServerUtils.java
index 3f0e7c88cf15bb26c37d1ecce3e5f49bf927915a..a753caba48152678e4ea15f82538d830f48201d8 100644
--- a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/SQLServerUtils.java
+++ b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/SQLServerUtils.java
@@ -144,13 +144,11 @@ public class SQLServerUtils {
         }
     }
 
-    public static String extractSource(@NotNull DBRProgressMonitor monitor, @NotNull SQLServerDatabase database, @Nullable SQLServerSchema schema, @NotNull  String objectName) throws DBException {
-        SQLServerDataSource dataSource = database.getDataSource();
-        String systemSchema = getSystemSchemaFQN(dataSource, database.getName(), SQLServerConstants.SQL_SERVER_SYSTEM_SCHEMA);
+    public static String extractSource(@NotNull DBRProgressMonitor monitor, @NotNull SQLServerSchema schema, @NotNull  String objectName) throws DBException {
+        SQLServerDataSource dataSource = schema.getDataSource();
+        String systemSchema = getSystemSchemaFQN(dataSource, schema.getDatabase().getName(), SQLServerConstants.SQL_SERVER_SYSTEM_SCHEMA);
         try (JDBCSession session = DBUtils.openMetaSession(monitor, dataSource, "Read source code")) {
-            String objectFQN = schema == null ?
-                DBUtils.getQuotedIdentifier(dataSource, objectName) :
-                DBUtils.getQuotedIdentifier(dataSource, schema.getName()) + "." + DBUtils.getQuotedIdentifier(dataSource, objectName);
+            String objectFQN = DBUtils.getQuotedIdentifier(dataSource, schema.getName()) + "." + DBUtils.getQuotedIdentifier(dataSource, objectName);
             try (JDBCPreparedStatement dbStat = session.prepareStatement(systemSchema + ".sp_helptext '" + objectFQN + "'")) {
                 try (JDBCResultSet dbResult = dbStat.executeQuery()) {
                     StringBuilder sql = new StringBuilder();
diff --git a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerDataType.java b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerDataType.java
index 30ff795e942ae85bf7d326a9453f5bfd85eadb9a..030a8cb8ec81eaaa513efcda48ba2560448e840f 100644
--- a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerDataType.java
+++ b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerDataType.java
@@ -96,6 +96,7 @@ public class SQLServerDataType implements DBSDataType, SQLServerObject, DBPQuali
         this.valueType = valueType;
     }
 
+    @NotNull
     @Override
     public SQLServerDataSource getDataSource() {
         return (SQLServerDataSource) owner.getDataSource();
diff --git a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerObject.java b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerObject.java
index d2cc328dca2df01dde01b719beff8dfde87e9bed..a562159c92764f9619052add7b1bee023461ede0 100644
--- a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerObject.java
+++ b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerObject.java
@@ -16,6 +16,7 @@
  */
 package org.jkiss.dbeaver.ext.mssql.model;
 
+import org.jkiss.code.NotNull;
 import org.jkiss.dbeaver.model.DBPNamedObject;
 import org.jkiss.dbeaver.model.DBPObjectWithLongId;
 import org.jkiss.dbeaver.model.struct.DBSObject;
@@ -26,5 +27,6 @@ import org.jkiss.dbeaver.model.struct.DBSObject;
  */
 public interface SQLServerObject extends DBPNamedObject, DBSObject, DBPObjectWithLongId
 {
-
+    @NotNull
+    SQLServerDataSource getDataSource();
 }
diff --git a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerProcedure.java b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerProcedure.java
index c08a3b5650bac268eac93cbc7a3646523a7312c5..71285c918edb7c6b003d27c9c344e8def6af2b92 100644
--- a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerProcedure.java
+++ b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerProcedure.java
@@ -137,7 +137,7 @@ public class SQLServerProcedure extends AbstractProcedure<SQLServerDataSource, S
                         "AS " + GeneralUtils.getDefaultLineSeparator() +
                         "SELECT 1";
             } else {
-                this.body = SQLServerUtils.extractSource(monitor, getContainer().getDatabase(), getContainer(), getName());
+                this.body = SQLServerUtils.extractSource(monitor, getContainer(), getName());
             }
         }
         return body;
diff --git a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerSchema.java b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerSchema.java
index b09296d53b5093aca385e2760688e7e6eb2bdaf5..d3e21753bdc54852f95e7d5e114b55948dda0f4b 100644
--- a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerSchema.java
+++ b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerSchema.java
@@ -106,6 +106,7 @@ public class SQLServerSchema implements DBSSchema, DBPSaveableObject, DBPQualifi
         return triggerCache;
     }
 
+    @NotNull
     @Override
     public SQLServerDataSource getDataSource() {
         return database.getDataSource();
diff --git a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerView.java b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerView.java
index 826539b5b78753728874adc9d3b9d596b65adbf3..8388e85047157651ea2bda52606847c84204e0b2 100644
--- a/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerView.java
+++ b/plugins/org.jkiss.dbeaver.ext.mssql/src/org/jkiss/dbeaver/ext/mssql/model/SQLServerView.java
@@ -153,7 +153,7 @@ public class SQLServerView extends SQLServerTableBase implements DBSView
         }
         if (ddl == null) {
             if (isPersisted()) {
-                ddl = SQLServerUtils.extractSource(monitor, getDatabase(), getSchema(), getName());
+                ddl = SQLServerUtils.extractSource(monitor, getSchema(), getName());
             } else {
                 ddl = "CREATE VIEW " + this.getFullyQualifiedName(DBPEvaluationContext.DDL) + " AS\n";
             }