diff --git a/modules/imgproc/src/filter.cpp b/modules/imgproc/src/filter.cpp
index 6e779eece8..5cbaf3f357 100644
--- a/modules/imgproc/src/filter.cpp
+++ b/modules/imgproc/src/filter.cpp
@@ -4630,6 +4630,7 @@ static bool ippFilter2D(int stype, int dtype, int kernel_type,
     }
     catch(const ::ipp::IwException& ex)
     {
+        CV_UNUSED(ex);
         return false;
     }