diff --git a/modules/core/src/cuda_info.cpp b/modules/core/src/cuda_info.cpp
index 5ad33ce8a1..08013ca988 100644
--- a/modules/core/src/cuda_info.cpp
+++ b/modules/core/src/cuda_info.cpp
@@ -70,6 +70,7 @@ void cv::cuda::setDevice(int device)
     (void) device;
     throw_no_cuda();
 #else
+    cudaFree(0);
     cudaSafeCall( cudaSetDevice(device) );
 #endif
 }