diff --git a/version.h b/version.h
index 31fc3c0e60..737a456b65 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.0.0"
 #define RUBY_RELEASE_DATE "2013-04-23"
-#define RUBY_PATCHLEVEL 159
+#define RUBY_PATCHLEVEL 160
 
 #define RUBY_RELEASE_YEAR 2013
 #define RUBY_RELEASE_MONTH 4
diff --git a/vm_exec.h b/vm_exec.h
index 1c77f3746a..b209495ab9 100644
--- a/vm_exec.h
+++ b/vm_exec.h
@@ -83,7 +83,7 @@ error !
   LABEL(insn): \
   INSN_ENTRY_SIG(insn); \
 
-/* dispather */
+/* dispatcher */
 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && __GNUC__ == 3
 #define DISPATCH_ARCH_DEPEND_WAY(addr) \
   asm volatile("jmp *%0;\t# -- inseted by vm.h\t[length = 2]" : : "r" (addr))
@@ -105,7 +105,7 @@ error !
   ;
 
 #else
-/* token threade code */
+/* token threaded code */
 
 #define TC_DISPATCH(insn)  \
   DISPATCH_ARCH_DEPEND_WAY(insns_address_table[GET_CURRENT_INSN()]); \
diff --git a/vm_opts.h b/vm_opts.h
index b5c91ea809..b67e2543e7 100644
--- a/vm_opts.h
+++ b/vm_opts.h
@@ -29,7 +29,7 @@
  * You can't change these options at runtime.
  */
 
-/* C compiler depend */
+/* C compiler dependent */
 #define OPT_DIRECT_THREADED_CODE     1
 #define OPT_TOKEN_THREADED_CODE      0
 #define OPT_CALL_THREADED_CODE       0