1 files changed, 3 insertions, 1 deletions
diff --git a/ninja/src/hash_map.h b/ninja/src/hash_map.h
index 076f6c02198..919b6fc5d14 100644
--- a/ninja/src/hash_map.h
+++ b/ninja/src/hash_map.h
@@ -15,6 +15,7 @@
 #ifndef NINJA_MAP_H_
 #define NINJA_MAP_H_
 
+#include <string.h>
 #include "string_piece.h"
 
 // MurmurHash2, by Austin Appleby
@@ -26,7 +27,8 @@ unsigned int MurmurHash2(const void* key, size_t len) {
   unsigned int h = seed ^ len;
   const unsigned char * data = (const unsigned char *)key;
   while (len >= 4) {
-    unsigned int k = *(unsigned int *)data;
+    unsigned int k;
+    memcpy(&k, data, sizeof k);
     k *= m;
     k ^= k >> r;
     k *= m;