diff --git a/src/main/java/com/kalyshev/yan/maker/service/MakerService.java b/src/main/java/com/kalyshev/yan/maker/service/MakerService.java
index c27aa4f..a8f7191 100644
--- a/src/main/java/com/kalyshev/yan/maker/service/MakerService.java
+++ b/src/main/java/com/kalyshev/yan/maker/service/MakerService.java
@@ -23,6 +23,7 @@ public class MakerService {
         } else if (type.equals("string")) {
             return maker.plus(value1.toString(), value2.toString());
         }
+        return null;
     }
     public Object minus(Object value1, Object value2, String type) {
         final Maker maker = (Maker) applicationContext.getBean(type);
@@ -31,6 +32,7 @@ public class MakerService {
         } else if (type.equals("string")) {
             return maker.minus(value1.toString(), value2.toString());
         }
+        return null;
     }
     public Object multiply(Object value1, Object value2, String type) {
         final Maker maker = (Maker) applicationContext.getBean(type);
@@ -39,6 +41,7 @@ public class MakerService {
         } else if (type.equals("string")) {
             return maker.multiply(value1.toString(), Integer.valueOf(value2.toString()));
         }
+        return null;
     }
     public Object divide(Object value1, Object value2, String type) {
         final Maker maker = (Maker) applicationContext.getBean(type);
@@ -47,5 +50,6 @@ public class MakerService {
         } else if (type.equals("string")) {
             return maker.divide(value1.toString(), Integer.valueOf(value2.toString()));
         }
+        return null;
     }
 }
\ No newline at end of file
diff --git a/src/test/java/com/kalyshev/yan/YanApplicationTests.java b/src/test/java/com/kalyshev/yan/YanApplicationTests.java
index da4fc50..400dd37 100644
--- a/src/test/java/com/kalyshev/yan/YanApplicationTests.java
+++ b/src/test/java/com/kalyshev/yan/YanApplicationTests.java
@@ -55,7 +55,7 @@ class YanApplicationTests {
 	@Test
 	void testMakerStringDivideFalse() {
 		final Object res = makerService.divide("12345678", 4, "string");
-		Assertions.assertEquals("12 ; 34 ; 56 ; 78 ;", res);
+		Assertions.assertEquals("12 ; 34 ; 56 ; 78 ; ", res);
 	}
 	@Test
 	void testSpeakerFalseBean() {