diff --git a/include/tensor/indices.h b/include/tensor/indices.h
index 75800e2d..bed0a1d1 100644
--- a/include/tensor/indices.h
+++ b/include/tensor/indices.h
@@ -151,6 +151,10 @@ class Dimensions {
            std::equal(begin(), end(), other.begin());
   }
 
+  bool operator!=(const Dimensions &other) const {
+    return !(*this == other);
+  }
+
  private:
   template <typename... index_like>
   index_t column_major_inner(index n, index in, index_like... irest) const {
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 073f3047..443377cb 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -76,6 +76,7 @@ package_add_test(test_tensor_unop test_tensor_unop.cc)
 package_add_test(test_vector test_vector.cc)
 package_add_test(test_indices test_indices.cc)
 package_add_test(test_indices_comparisons test_indices_comparisons.cc)
+package_add_test(test_dimensions test_dimensions.cc)
 package_add_test(test_range test_range.cc)
 package_add_test(test_range_iterator test_range_iterator.cc)
 package_add_test(test_view_read test_view_read.cc)
diff --git a/tests/test_dimensions.cc b/tests/test_dimensions.cc
new file mode 100644
index 00000000..9a801ff8
--- /dev/null
+++ b/tests/test_dimensions.cc
@@ -0,0 +1,43 @@
+/*
+    Copyright (c) 2010 Juan Jose Garcia Ripoll
+
+    Tensor is free software; you can redistribute it and/or modify it
+    under the terms of the GNU Library General Public License as published
+    by the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Library General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include <gtest/gtest.h>
+#include <tensor/indices.h>
+
+
+namespace tensor_test {
+
+using namespace tensor;
+
+TEST(Dimensions, equality) {
+  Dimensions base{1, 2, 3};
+
+  Dimensions same{1, 2, 3};
+  Dimensions otherSize{1, 2, 4};
+  Dimensions otherRank{1, 2, 3, 1};
+
+  ASSERT_TRUE(base == same);
+  ASSERT_FALSE(base == otherSize);
+  ASSERT_FALSE(base == otherRank);
+
+  ASSERT_FALSE(base != same);
+  ASSERT_TRUE(base != otherSize);
+  ASSERT_TRUE(base != otherRank);
+}
+
+}