diff --git a/lib/THCUNN/PReLU.cu b/lib/THCUNN/PReLU.cu
index 395e4a1e..0a286b76 100644
--- a/lib/THCUNN/PReLU.cu
+++ b/lib/THCUNN/PReLU.cu
@@ -68,7 +68,7 @@ struct PReLUAccGradParametersShared
 {
   __device__ __forceinline__ void operator()(T *gradInput, T  *input, T *gradOutput)
   {
-    *gradInput = (*input) * (*gradOutput) * (*input <= 0);
+    *gradInput = *input <= 0 ? (*input) * (*gradOutput) : 0;
   }
 };
 
@@ -83,7 +83,7 @@ struct PReLUAccGradParameters
 
   __device__ __forceinline__ void operator()(T *gradInput, T *input, T *gradOutput)
   {
-    *gradInput = (*input) * (*gradOutput) * scale * (*input <= 0);
+    *gradInput = *input <= 0 ? (*input) * (*gradOutput) * scale : 0;
   }
 };
 
@@ -98,7 +98,7 @@ struct PReLUAccGradParameters1to1
 
   __device__ __forceinline__ void operator()(T *gradWeight, T *input, T *gradOutput)
   {
-    *gradWeight += (*input) * (*gradOutput) * scale * (*input <= 0);
+    *gradWeight += *input <= 0 ? (*input) * (*gradOutput) * scale : 0;
   }
 };