diff --git a/ext/cvmat.cpp b/ext/cvmat.cpp
index 750acba..8d6aa88 100644
--- a/ext/cvmat.cpp
+++ b/ext/cvmat.cpp
@@ -1374,7 +1374,7 @@ rb_reshape(VALUE self, VALUE hash)
 VALUE
 rb_repeat(VALUE self, VALUE object)
 {
-  if (rb_obj_is_kind_of(object, rb_class()))
+  if (!rb_obj_is_kind_of(object, rb_class()))
     rb_raise(rb_eTypeError, "argument should be CvMat subclass.");
   cvRepeat(CVARR(self), CVARR(object));
   return object;
diff --git a/test/test_cvmat.rb b/test/test_cvmat.rb
index 3836d75..73d4dfa 100755
--- a/test/test_cvmat.rb
+++ b/test/test_cvmat.rb
@@ -594,11 +594,11 @@ class TestCvMat < OpenCVTestCase
   end
 
   def test_repeat
-    m1 = create_cvmat(2, 3)
+    m1 = create_cvmat(2, 3, :cv8u, 3)
     assert_raise(TypeError) {
       m1.repeat(1)
     }
-    m2 = CvMat.new(6, 9)
+    m2 = CvMat.new(6, 9, :cv8u, 3)
     m2 = m1.repeat(m2)
     m2.height.times { |j|
       m2.width.times { |i|