diff --git a/SuperFastHash.cpp b/SuperFastHash.cpp
index 071d0391..3e0d8766 100644
--- a/SuperFastHash.cpp
+++ b/SuperFastHash.cpp
@@ -30,7 +30,8 @@ FORCE_INLINE uint16_t get16bits ( const void * p )
 }
 
 // objsize: 0-d2: 210
-uint32_t SuperFastHash (const char * data, int len, uint32_t hash) {
+uint32_t SuperFastHash (const char * data_, int len, uint32_t hash) {
+  const uint8_t *data(reinterpret_cast<const uint8_t *>(data_));
   uint32_t tmp;
   int rem;