diff --git a/util/gutil/gutil_comparator.go b/util/gutil/gutil_comparator.go
index 3c902d601..39c364868 100644
--- a/util/gutil/gutil_comparator.go
+++ b/util/gutil/gutil_comparator.go
@@ -77,12 +77,28 @@ func ComparatorUint64(a, b interface{}) int {
 
 // ComparatorFloat32 provides a basic comparison on float32.
 func ComparatorFloat32(a, b interface{}) int {
-	return int(gconv.Float32(a) - gconv.Float32(b))
+	aFloat := gconv.Float64(a)
+	bFloat := gconv.Float64(b)
+	if aFloat == bFloat {
+		return 0
+	}
+	if aFloat > bFloat {
+		return 1
+	}
+	return -1
 }
 
 // ComparatorFloat64 provides a basic comparison on float64.
 func ComparatorFloat64(a, b interface{}) int {
-	return int(gconv.Float64(a) - gconv.Float64(b))
+	aFloat := gconv.Float64(a)
+	bFloat := gconv.Float64(b)
+	if aFloat == bFloat {
+		return 0
+	}
+	if aFloat > bFloat {
+		return 1
+	}
+	return -1
 }
 
 // ComparatorByte provides a basic comparison on byte.
diff --git a/util/gutil/gutil_z_unit_comparator_test.go b/util/gutil/gutil_z_unit_comparator_test.go
index 4538ba22b..db6ad9092 100755
--- a/util/gutil/gutil_z_unit_comparator_test.go
+++ b/util/gutil/gutil_z_unit_comparator_test.go
@@ -160,3 +160,20 @@ func Test_ComparatorTime(t *testing.T) {
 		t.Assert(l, -1)
 	})
 }
+
+func Test_ComparatorFloat32OfFixed(t *testing.T) {
+	gtest.C(t, func(t *gtest.T) {
+		t.Assert(gutil.ComparatorFloat32(0.1, 0.1), 0)
+		t.Assert(gutil.ComparatorFloat32(1.1, 2.1), -1)
+		t.Assert(gutil.ComparatorFloat32(2.1, 1.1), 1)
+	})
+}
+
+func Test_ComparatorFloat64OfFixed(t *testing.T) {
+
+	gtest.C(t, func(t *gtest.T) {
+		t.Assert(gutil.ComparatorFloat64(0.1, 0.1), 0)
+		t.Assert(gutil.ComparatorFloat64(1.1, 2.1), -1)
+		t.Assert(gutil.ComparatorFloat64(2.1, 1.1), 1)
+	})
+}