diff --git a/rotation.cpp b/rotation.cpp
index 0a169f5..f00c02e 100644
--- a/rotation.cpp
+++ b/rotation.cpp
@@ -869,6 +869,36 @@ bool check_trigo()
   return true;
 }
 
+bool check_00(string const& path)
+{
+  Image const src(path);
+  Image const* rotated = rotate(src, 0);
+
+  for (unsigned int y = 0; y < rotated->height; ++y)
+  {
+    for (unsigned int x = 0; x < rotated->width; ++x)
+    {
+      unsigned rot_index = (y * rotated->width + x) * rotated->pixel_size;
+      unsigned src_index = (y * src.width + x) * src.pixel_size;
+      if (memcmp(&rotated->buffer[rot_index], &src.buffer[src_index], src.pixel_size * sizeof (pvalue_t)) != 0)
+      {
+        Point r(x, y);
+        Point s(x, y);
+        LOG << "R" << r << " != S" << s << endl;
+        LOG << "R: " << rot_index << " != S: " << src_index << endl;
+        LOG << rotated->buffer[rot_index] << " != " << src.buffer[src_index] << endl;
+        LOG << "R dim: " << rotated->width << " x " << rotated->height << endl;
+        LOG << "S dim: " << src.width << " x " << src.height << endl;
+        return false;
+      }
+    }
+  }
+
+  delete rotated;
+
+  return true;
+}
+
 bool check_90(string const& path)
 {
   Image const src(path);
@@ -926,7 +956,7 @@ int main(int argc, char* argv[])
     return 1;
   }
 
-  bool perform_check = false;
+  bool perform_check = true;
 
   if (perform_check)
   {
@@ -936,6 +966,12 @@ int main(int argc, char* argv[])
     if (!check_trigo())
       return 1;
 
+    if (!check_00(argv[1]))
+    {
+      ERRLOG << "0 degree check failed" << endl << endl;
+      return 1;
+    }
+
     if (!check_90(argv[1]))
     {
       ERRLOG << "90 degrees check failed" << endl << endl;