diff --git a/NEWS b/NEWS
index 601c45d27..0b756d032 100644
--- a/NEWS
+++ b/NEWS
@@ -5,6 +5,7 @@ ver 0.19.15 (not yet released)
   - opus: support bigger OpusTags packets
 * fix more build failures on non-glibc builds due to constexpr Mutex
 * fix build failure due to missing include
+* fix unit test on Alpha
 
 ver 0.19.14 (2016/03/18)
 * decoder
diff --git a/test/test_byte_reverse.cxx b/test/test_byte_reverse.cxx
index 0ab97e4d1..321cc2e6c 100644
--- a/test/test_byte_reverse.cxx
+++ b/test/test_byte_reverse.cxx
@@ -49,9 +49,9 @@ CPPUNIT_TEST_SUITE_REGISTRATION(ByteReverseTest);
 void
 ByteReverseTest::TestByteReverse2()
 {
-	static const char src[] = "123456";
+	static const char src[] alignas(uint16_t) = "123456";
 	static const char result[] = "214365";
-	static uint8_t dest[ARRAY_SIZE(src)];
+	static uint8_t dest[ARRAY_SIZE(src)] alignas(uint16_t);
 
 	reverse_bytes(dest, (const uint8_t *)src,
 		      (const uint8_t *)(src + ARRAY_SIZE(src) - 1), 2);
@@ -73,9 +73,9 @@ ByteReverseTest::TestByteReverse3()
 void
 ByteReverseTest::TestByteReverse4()
 {
-	static const char src[] = "12345678";
+	static const char src[] alignas(uint32_t) = "12345678";
 	static const char result[] = "43218765";
-	static uint8_t dest[ARRAY_SIZE(src)];
+	static uint8_t dest[ARRAY_SIZE(src)] alignas(uint32_t);
 
 	reverse_bytes(dest, (const uint8_t *)src,
 		      (const uint8_t *)(src + ARRAY_SIZE(src) - 1), 4);