diff --git a/speed.c b/speed.c
index 9aa164e8..5d98eec3 100644
--- a/speed.c
+++ b/speed.c
@@ -177,7 +177,7 @@ void speed(void)
 			}
 		} SPEED_STOP
 
-		printf("CRC intel-crc32l %"PRIu64" [MB/s]\n", ds / dt);
+		printf("CRC intel-crc32 %"PRIu64" [MB/s]\n", ds / dt);
 	}
 #endif
 	SPEED_START {
diff --git a/util.c b/util.c
index 17d8954d..d553bb9c 100644
--- a/util.c
+++ b/util.c
@@ -1093,13 +1093,27 @@ uint32_t crc32c_gen(uint32_t crc, const unsigned char* ptr, unsigned size)
 
 uint32_t crc32c_x86(uint32_t crc, const unsigned char* ptr, unsigned size)
 {
+#if defined(__x86_64__)
+	uint64_t crc64;
+#endif
+
 	crc ^= CRC_IV;
 
+#if defined(__x86_64__)
+	crc64 = crc;
+	while (size >= 8) {
+		asm volatile ("crc32q %1, %0\n" : "+r" (crc64) : "rm" (*(uint64_t*)ptr));
+		ptr += 8;
+		size -= 8;
+	}
+	crc = crc64;
+#else
 	while (size >= 4) {
 		asm volatile ("crc32l %1, %0\n" : "+r" (crc) : "rm" (*(uint32_t*)ptr));
 		ptr += 4;
 		size -= 4;
 	}
+#endif
 
 	while (size) {
 		asm volatile ("crc32b %1, %0\n" : "+r" (crc) : "rm" (*ptr));