diff --git a/contact-center/app/src/main/java/com/chatopera/cc/Application.java b/contact-center/app/src/main/java/com/chatopera/cc/Application.java
index b9b5d76b..e62f6889 100644
--- a/contact-center/app/src/main/java/com/chatopera/cc/Application.java
+++ b/contact-center/app/src/main/java/com/chatopera/cc/Application.java
@@ -37,6 +37,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.data.elasticsearch.repository.config.EnableElasticsearchRepositories;
 import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 import org.springframework.transaction.annotation.EnableTransactionManagement;
+import org.springframework.util.unit.DataSize;
 
 import javax.servlet.MultipartConfigElement;
 import java.io.IOException;
@@ -86,9 +87,9 @@ public class Application {
     @Value("${web.upload-path}")
     private String uploaddir;
     @Value("${spring.servlet.multipart.max-file-size}")
-    private String multipartMaxUpload;
+    private DataSize multipartMaxUpload;
     @Value("${spring.servlet.multipart.max-request-size}")
-    private String multipartMaxRequest;
+    private DataSize multipartMaxRequest;
 
     /**
      * Init local resources
diff --git a/contact-center/app/src/test/java/org/springframework/util/unit/DataSizeTest.java b/contact-center/app/src/test/java/org/springframework/util/unit/DataSizeTest.java
new file mode 100644
index 00000000..acc2cb4d
--- /dev/null
+++ b/contact-center/app/src/test/java/org/springframework/util/unit/DataSizeTest.java
@@ -0,0 +1,14 @@
+package org.springframework.util.unit;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class DataSizeTest {
+
+    @Test
+    void test() {
+        DataSize parsed = DataSize.parse("15MB");
+        assertEquals(15, parsed.toMegabytes());
+    }
+}