diff --git a/src/DKSBaseMuSR.cpp b/src/DKSBaseMuSR.cpp
index 6e7d06f..7b290fc 100644
--- a/src/DKSBaseMuSR.cpp
+++ b/src/DKSBaseMuSR.cpp
@@ -146,10 +146,10 @@ int DKSBaseMuSR::initChiSquare(int size_data, int size_param, int size_func, int
 
   if (apiCuda()) {
     ierr = CUDA_SAFECALL( DKS_SUCCESS );
-    chiSq = CUDA_SAFEINIT(new CudaChiSquareRuntime(getCudaBase()));
+    chiSq = (ChiSquareRuntime*) CUDA_SAFEINIT(new CudaChiSquareRuntime(getCudaBase()));
   } else {
     ierr = OPENCL_SAFECALL( DKS_SUCCESS );
-    chiSq = OPENCL_SAFECALL(new OpenCLChiSquareRuntime(getOpenCLBase()));
+    chiSq = (ChiSquareRuntime*) OPENCL_SAFECALL(new OpenCLChiSquareRuntime(getOpenCLBase()));
   }
 
   if (ierr == DKS_SUCCESS) {