diff --git a/strutil.c b/strutil.c
index c02490f..4c9ef4d 100644
--- a/strutil.c
+++ b/strutil.c
@@ -2,10 +2,10 @@
 #include "string.h"
 
 uintptr_t strnhash(const char* s, size_t n) {
-    static const size_t shift = sizeof(uintptr_t) * 8 - 4;
     uintptr_t hash = 0;
+    static size_t const a = 33;
     for(size_t i = 0; i < n; ++i) {
-        hash = ((hash << 4) | s[i]) ^ (((uintptr_t)0xF << shift) & hash);
+        hash = ((hash*a) + s[i]);
     }
     return hash;
 }