diff --git a/nntrainer/layers/pow_layer.cpp b/nntrainer/layers/pow_layer.cpp
index 8859738..9f55665 100644
--- a/nntrainer/layers/pow_layer.cpp
+++ b/nntrainer/layers/pow_layer.cpp
@@ -33,6 +33,11 @@ void PowLayer::forwarding_operation(const Tensor &input, Tensor &hidden) {
 
 void PowLayer::calcDerivative(RunLayerContext &context) {
   float exp = std::get<props::Exponent>(pow_props).get();
+  // The zero-exponent forward is constant, so avoid evaluating x^-1.
+  if (exp == 0.0f) {
+    context.getOutgoingDerivative(SINGLE_INOUT_IDX).setZero();
+    return;
+  }
   context.getOutgoingDerivative(0).copy(
     context.getIncomingDerivative(SINGLE_INOUT_IDX)
       .multiply(exp)