diff --git a/jscl/src/main/java/org/solovyev/common/NumberFormatter.java b/jscl/src/main/java/org/solovyev/common/NumberFormatter.java
index 857b9f9e..5eb44bfa 100644
--- a/jscl/src/main/java/org/solovyev/common/NumberFormatter.java
+++ b/jscl/src/main/java/org/solovyev/common/NumberFormatter.java
@@ -1,12 +1,16 @@
 package org.solovyev.common;
 
+import java.math.BigDecimal;
+
+import javax.annotation.Nonnull;
+
 import midpcalc.Real;
 
-import javax.annotation.Nonnull;
-import java.math.BigDecimal;
-
 import static java.lang.Math.pow;
-import static midpcalc.Real.NumberFormat.*;
+import static midpcalc.Real.NumberFormat.FSE_ENG;
+import static midpcalc.Real.NumberFormat.FSE_FIX;
+import static midpcalc.Real.NumberFormat.FSE_NONE;
+import static midpcalc.Real.NumberFormat.FSE_SCI;
 
 public class NumberFormatter {
 
@@ -88,12 +92,10 @@ public class NumberFormatter {
         if (radix != 10) {
             return true;
         }
-        if (absValue < pow(10, -MAX_PRECISION)) {
-            // should never use simple format for small numbers
-            return false;
-        }
         if (format == FSE_NONE) {
-            return true;
+            // simple format should be used only if rounding is on or if number is big enough
+            final boolean round = precision != NO_ROUNDING;
+            return round || absValue >= pow(10, -MAX_PRECISION);
         }
         if (pow(10, -simpleFormatMagnitude) <= absValue && absValue < pow(10, simpleFormatMagnitude)) {
             return true;
diff --git a/jscl/src/test/java/org/solovyev/common/NumberFormatterTest.java b/jscl/src/test/java/org/solovyev/common/NumberFormatterTest.java
index c00a02be..45ce11f1 100644
--- a/jscl/src/test/java/org/solovyev/common/NumberFormatterTest.java
+++ b/jscl/src/test/java/org/solovyev/common/NumberFormatterTest.java
@@ -69,6 +69,10 @@ public class NumberFormatterTest {
         assertEquals("3.333333333333333E-19", numberFormatter.format(pow(10, -18) / 3));
         assertEquals("1234567890000000000", numberFormatter.format(123456789 * pow(10, 10)));
         assertEquals("0.0000000000000001", numberFormatter.format(pow(10, -16)));
+        assertEquals("1E-17", numberFormatter.format(pow(10, -17)));
+        assertEquals("1E-18", numberFormatter.format(pow(10, -18)));
+        assertEquals("1.5E-18", numberFormatter.format(1.5 * pow(10, -18)));
+        assertEquals("1E-100", numberFormatter.format(pow(10, -100)));
 
         testSimpleFormat();
     }
@@ -81,9 +85,13 @@ public class NumberFormatterTest {
         assertEquals("1", numberFormatter.format(1d));
         assertEquals("0", numberFormatter.format(pow(10, -6)));
         assertEquals("0.33333", numberFormatter.format(1d / 3));
-        assertEquals("3.33333E-19", numberFormatter.format(pow(10, -18) / 3));
+        assertEquals("0", numberFormatter.format(pow(10, -18) / 3));
         assertEquals("1234567890000000000", numberFormatter.format(123456789 * pow(10, 10)));
         assertEquals("0", numberFormatter.format(pow(10, -16)));
+        assertEquals("0", numberFormatter.format(pow(10, -17)));
+        assertEquals("0", numberFormatter.format(pow(10, -18)));
+        assertEquals("0", numberFormatter.format(1.5 * pow(10, -18)));
+        assertEquals("0", numberFormatter.format(pow(10, -100)));
 
         testSimpleFormat();
     }
@@ -98,10 +106,6 @@ public class NumberFormatterTest {
         assertEquals("1E100", numberFormatter.format(pow(10, 100)));
 
         assertEquals("0.01", numberFormatter.format(pow(10, -2)));
-        assertEquals("1E-17", numberFormatter.format(pow(10, -17)));
-        assertEquals("1E-18", numberFormatter.format(pow(10, -18)));
-        assertEquals("1.5E-18", numberFormatter.format(1.5 * pow(10, -18)));
-        assertEquals("1E-100", numberFormatter.format(pow(10, -100)));
 
         assertEquals("5000000000000000000", numberFormatter.format(5000000000000000000d));
         assertEquals("5000000000000000000", numberFormatter.format(5000000000000000001d));