diff --git a/qemu/include/exec/cpu-all.h b/qemu/include/exec/cpu-all.h
index bc341e7c..d1d13a11 100644
--- a/qemu/include/exec/cpu-all.h
+++ b/qemu/include/exec/cpu-all.h
@@ -32,15 +32,10 @@
 #define EXCP_YIELD      0x10004 /* cpu wants to yield timeslice to another */
 
 /* some important defines:
- *
- * WORDS_ALIGNED : if defined, the host cpu can only make word aligned
- * memory accesses.
  *
  * HOST_WORDS_BIGENDIAN : if defined, the host cpu is big endian and
  * otherwise little endian.
  *
- * (TARGET_WORDS_ALIGNED : same for target cpu (not supported yet))
- *
  * TARGET_WORDS_BIGENDIAN : same for target cpu
  */
 
diff --git a/qemu/include/qemu-common.h b/qemu/include/qemu-common.h
index 6734bcbc..ef9cce3d 100644
--- a/qemu/include/qemu-common.h
+++ b/qemu/include/qemu-common.h
@@ -17,10 +17,6 @@
 #include "qemu/fprintf-fn.h"
 #include "exec/cpu-common.h"
 
-#if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__) || defined(__ia64__)
-#define WORDS_ALIGNED
-#endif
-
 #define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
 
 #include "unicorn/platform.h"