--- modules/woff2/src/store_bytes.h
+++ modules/woff2/src/store_bytes.h
@@ -29,41 +29,44 @@ inline size_t StoreU32(uint8_t* dst, size_t offset, uint32_t x) {
   dst[offset + 1] = x >> 16;
   dst[offset + 2] = x >> 8;
   dst[offset + 3] = x;
   return offset + 4;
 }
 
 inline size_t Store16(uint8_t* dst, size_t offset, int x) {
 #if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
-  *reinterpret_cast<uint16_t*>(dst + offset) =
-      ((x & 0xFF) << 8) | ((x & 0xFF00) >> 8);
+  uint16_t v = ((x & 0xFF) << 8) | ((x & 0xFF00) >> 8);
+  memcpy(dst + offset, &v, 2);
 #elif (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
-  *reinterpret_cast<uint16_t*>(dst + offset) = static_cast<uint16_t>(x);
+  uint16_t v = static_cast<uint16_t>(x);
+  memcpy(dst + offset, &v, 2);
 #else
   dst[offset] = x >> 8;
   dst[offset + 1] = x;
 #endif
   return offset + 2;
 }
 
 inline void StoreU32(uint32_t val, size_t* offset, uint8_t* dst) {
   dst[(*offset)++] = val >> 24;
   dst[(*offset)++] = val >> 16;
   dst[(*offset)++] = val >> 8;
   dst[(*offset)++] = val;
 }
 
 inline void Store16(int val, size_t* offset, uint8_t* dst) {
 #if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
-  *reinterpret_cast<uint16_t*>(dst + *offset) =
+  uint16_t v = ((val & 0xFF) << 8) | ((val & 0xFF00) >> 8);
+  memcpy(dst + *offset, &v, 2);
       ((val & 0xFF) << 8) | ((val & 0xFF00) >> 8);
   *offset += 2;
 #elif (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
-  *reinterpret_cast<uint16_t*>(dst + *offset) = static_cast<uint16_t>(val);
+  uint16_t v = static_cast<uint16_t>(val);
+  memcpy(dst + *offset, &v, 2);
   *offset += 2;
 #else
   dst[(*offset)++] = val >> 8;
   dst[(*offset)++] = val;
 #endif
 }
 
 inline void StoreBytes(const uint8_t* data, size_t len,
--- modules/woff2/src/woff2_common.cc
+++ modules/woff2/src/woff2_common.cc
@@ -20,22 +20,23 @@
 
 namespace woff2 {
 
 
 uint32_t ComputeULongSum(const uint8_t* buf, size_t size) {
   uint32_t checksum = 0;
   size_t aligned_size = size & ~3;
   for (size_t i = 0; i < aligned_size; i += 4) {
+    uint32_t v;
+    memcpy(&v, buf + i, 4);
 #if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
-    uint32_t v = *reinterpret_cast<const uint32_t*>(buf + i);
     checksum += (((v & 0xFF) << 24) | ((v & 0xFF00) << 8) |
       ((v & 0xFF0000) >> 8) | ((v & 0xFF000000) >> 24));
 #elif (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
-    checksum += *reinterpret_cast<const uint32_t*>(buf + i);
+    checksum += v;
 #else
     checksum += (buf[i] << 24) | (buf[i + 1] << 16) |
       (buf[i + 2] << 8) | buf[i + 3];
 #endif
   }
 
   // treat size not aligned on 4 as if it were padded to 4 with 0's
   if (size != aligned_size) {