diff --git a/modules/dnn/src/cuda4dnn/primitives/inner_product.hpp b/modules/dnn/src/cuda4dnn/primitives/inner_product.hpp
index d5baa50b34..a0a00ce125 100644
--- a/modules/dnn/src/cuda4dnn/primitives/inner_product.hpp
+++ b/modules/dnn/src/cuda4dnn/primitives/inner_product.hpp
@@ -31,7 +31,7 @@ namespace cv { namespace dnn { namespace cuda4dnn {
             : stream(std::move(stream_)), cublasHandle(std::move(handle)), axis{ axis }
         {
             weightsTensor = csl::makeTensorHeader<T>(weights);
-            CV_Assert(get_effective_rank(weightsTensor) == 2);
+            CV_Assert(get_effective_rank(weightsTensor) <= 2);
             csl::copyMatToTensor<T>(weights, weightsTensor, stream);
 
             if (!bias.empty())