diff --git a/modules/dnn/src/layers/elementwise_layers.cpp b/modules/dnn/src/layers/elementwise_layers.cpp
index b84523eb93a16ce879a2a8effd1cabff5242cb0e..e4375abd6dcd6cf55b5ff23bfaa13306d366f78b 100644
--- a/modules/dnn/src/layers/elementwise_layers.cpp
+++ b/modules/dnn/src/layers/elementwise_layers.cpp
@@ -680,7 +680,14 @@ struct SigmoidFunctor : public BaseDefaultFunctor<SigmoidFunctor>
 
     inline float calculate(float x) const
     {
-        return 1.f / (1.f + exp(-x));
+        float y;
+        if (x >= 0)
+            y = 1.f / (1.f + exp(-x));
+        else {
+            y = exp(x);
+            y = y / (1 + y);
+        }
+        return y;
     }
 
 #ifdef HAVE_HALIDE