diff --git a/modules/dnn/src/model.cpp b/modules/dnn/src/model.cpp
index acee29e680..aefeaa42b3 100644
--- a/modules/dnn/src/model.cpp
+++ b/modules/dnn/src/model.cpp
@@ -100,7 +100,7 @@ public:
         // Faster-RCNN or R-FCN
         if (net.getLayer(0)->outputNameToIndex("im_info") != -1)
         {
-            Mat imInfo(Matx31f(size.height, size.width, 1.6f));
+            Mat imInfo(Matx13f(size.height, size.width, 1.6f));
             net.setInput(imInfo, "im_info");
         }
         net.forward(outs, outNames);
diff --git a/modules/dnn/test/test_model.cpp b/modules/dnn/test/test_model.cpp
index ddec6e79e4..5766684c41 100644
--- a/modules/dnn/test/test_model.cpp
+++ b/modules/dnn/test/test_model.cpp
@@ -206,6 +206,8 @@ TEST_P(Test_Model, DetectionOutput)
     {
         if (backend == DNN_BACKEND_OPENCV)
             scoreDiff = 4e-3;
+        else
+            scoreDiff = 2e-2;
         iouDiff = 1.8e-1;
     }