diff --git a/examples_ptx/radixSort/radixSort.cu b/examples_ptx/radixSort/radixSort.cu
index c2fae9ab..be5537b9 100644
--- a/examples_ptx/radixSort/radixSort.cu
+++ b/examples_ptx/radixSort/radixSort.cu
@@ -93,7 +93,7 @@ void sortPass(
   const  int mask = (1 << NUMBITS) - 1;
 
   /* copy digit offset from Gmem to Lmem */ 
-#if 1
+#if 0
   __shared__ int digitOffsets_sh[NUMDIGITS*4];
   int *digitOffsets = digitOffsets_sh + warpIdx*NUMDIGITS;
   for (int digit = programIndex; digit < NUMDIGITS; digit += programCount)
diff --git a/examples_ptx/radixSort/radixSort.ispc b/examples_ptx/radixSort/radixSort.ispc
index 2abd11af..8e97bc5b 100644
--- a/examples_ptx/radixSort/radixSort.ispc
+++ b/examples_ptx/radixSort/radixSort.ispc
@@ -64,9 +64,13 @@ void sortPass(
   const uniform int mask = (1 << NUMBITS) - 1;
 
   /* copy digit offset from Gmem to Lmem */ 
+#if 1
   uniform int digitOffsets[NUMDIGITS];
   foreach (digit = 0 ... NUMDIGITS)
     digitOffsets[digit] = digitOffsetsAll[blockIdx*NUMDIGITS + digit];
+#else
+  uniform int * uniform digitOffsets = &digitOffsetsAll[blockIdx*NUMDIGITS];
+#endif
 
   foreach (i = 0 ... nloc)
   {