diff --git a/Hashes.cpp b/Hashes.cpp
index 8b054318..42424513 100644
--- a/Hashes.cpp
+++ b/Hashes.cpp
@@ -1317,10 +1317,12 @@ void nmhash32_test ( const void * key, int len, uint32_t seed, void * out ) {
           ((uint16_t*)accX)[i] *= ((uint16_t*)__NMH_M1_V)[i]; // ???
       }
       for (unsigned i = 0; i < COUNT_OF(accX); i++) printf("1: %4d %08x\n", i, accX[i]);
+#if 0
       for (i = 0; i < nbGroups; ++i) {
           accX[i] ^= accX[i] << 5 ^ accX[i] >> 13; // ???
       }
       for (unsigned i = 0; i < COUNT_OF(accX); i++) printf("2: %4d %08x\n", i, accX[i]);
+#endif
 
       sumhash32(accX, sizeof(accX), 0, &oh); printf("sumhash32(accX) = %x\n", oh);
       sumhash32(accY, sizeof(accY), 0, &oh); printf("sumhash32(accY) = %x\n", oh);