diff --git a/test/test_cvscalar.rb b/test/test_cvscalar.rb
index 4103819..44c2cd0 100755
--- a/test/test_cvscalar.rb
+++ b/test/test_cvscalar.rb
@@ -67,9 +67,9 @@ class TestCvScalar < OpenCVTestCase
     }
     mat = CvScalar.new(0.1).sub(mat, mask)
 
-    [CvMat.new(5, 5, :cv16u, 1), CvMat.new(5, 5, :cv8u, 3)].each { |mask|
+    [CvMat.new(5, 5, :cv16u, 1), CvMat.new(5, 5, :cv8u, 3)].each { |msk|
       assert_raise(TypeError) {
-        CvScalar.new.sub(mat, mask)
+        CvScalar.new.sub(mat, msk)
       }
     }
   end
diff --git a/test/test_preliminary.rb b/test/test_preliminary.rb
index b530c44..19beeff 100755
--- a/test/test_preliminary.rb
+++ b/test/test_preliminary.rb
@@ -104,8 +104,8 @@ class TestPreliminary < OpenCVTestCase
       }
     }
 
-    mat = create_cvmat(2, 3, :cv16u, 3) { |j, i, c|
-      n = j + i + c
+    mat = create_cvmat(2, 3, :cv16u, 3) { |j, i, cnt|
+      n = j + i + cnt
       CvScalar.new(n, n, n, 0)
     }
     assert_equal(2, mat.height)