diff --git a/src/main/java/ua/net/uid/utils/helpers/NumberHelper.java b/src/main/java/ua/net/uid/utils/helpers/NumberHelper.java
index 494d691..6d0d6a5 100644
--- a/src/main/java/ua/net/uid/utils/helpers/NumberHelper.java
+++ b/src/main/java/ua/net/uid/utils/helpers/NumberHelper.java
@@ -211,7 +211,7 @@
         if (real) {
             return Double.valueOf((double)main * Math.pow(10, base));
         } else {
-            return Byte.valueOf((byte)0);
+            return smallest(main);
         }
     }
 
diff --git a/src/test/java/ua/net/uid/utils/helpers/NumberHelperTest.java b/src/test/java/ua/net/uid/utils/helpers/NumberHelperTest.java
index 712e228..d57c72a 100644
--- a/src/test/java/ua/net/uid/utils/helpers/NumberHelperTest.java
+++ b/src/test/java/ua/net/uid/utils/helpers/NumberHelperTest.java
@@ -203,37 +203,41 @@
         String source = "1 333 70000 465729124123444 .01 77. 3.333 .1e-3 222.e76 123.456e-78 888e+8 ";
 
         assertEquals((byte)1, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(1, position.getIndex());
 
         assertEquals((short)333, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(5, position.getIndex());
 
         assertEquals(70000, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(11, position.getIndex());
 
         assertEquals(465729124123444l, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(27, position.getIndex());
 
         assertEquals(.01, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(31, position.getIndex());
 
         assertEquals(77., NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(35, position.getIndex());
 
         assertEquals(3.333, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(41, position.getIndex());
 
         assertEquals(.1e-3, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(47, position.getIndex());
 
         assertEquals(222.e76, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(55, position.getIndex());
 
         assertEquals(123.456e-78, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(67, position.getIndex());
 
         assertEquals(888e+8, NumberHelper.parse(source, position));
-        assertEquals(7, position.getIndex());
+        assertEquals(74, position.getIndex());
+
+        assertNull(NumberHelper.parse(source, position));
+        assertEquals(74, position.getIndex());
+        assertEquals(75, position.getErrorIndex());
     }
 
 }