diff --git a/ChangeLog b/ChangeLog
index 8683bf333e..d6c278f3cd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+Mon Feb 17 01:12:57 2014  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* ext/fiddle/closure.c: use sizeof(*pcl) for correct sizeof value.
+	  [ruby-core:57599] [Bug #8978].
+
+Mon Feb 17 01:12:57 2014  Aaron Patterson <aaron@tenderlovemaking.com>
+
+	* ext/fiddle/closure.c: use sizeof(*pcl) for correct sizeof value.
+	  [ruby-core:57599] [Bug #8978].  Thanks mame!
+
 Mon Feb 17 01:09:52 2014  Eric Wong <e@80x24.org>
 
 	* benchmark/driver: avoid large alloc in driver process
diff --git a/ext/fiddle/closure.c b/ext/fiddle/closure.c
index d064f11991..2788bce4c5 100644
--- a/ext/fiddle/closure.c
+++ b/ext/fiddle/closure.c
@@ -21,7 +21,7 @@ dealloc(void * ptr)
 #ifndef DONT_USE_FFI_CLOSURE_ALLOC
     ffi_closure_free(cls->pcl);
 #else
-    munmap(cls->pcl, sizeof(cls->pcl));
+    munmap(cls->pcl, sizeof(*cls->pcl));
 #endif
     if (cls->argv) xfree(cls->argv);
     xfree(cls);
@@ -228,7 +228,7 @@ initialize(int rbargc, VALUE argv[], VALUE self)
 #else
     result = ffi_prep_closure(pcl, cif, callback, (void *)self);
     cl->code = (void *)pcl;
-    i = mprotect(pcl, sizeof(pcl), PROT_READ | PROT_EXEC);
+    i = mprotect(pcl, sizeof(*pcl), PROT_READ | PROT_EXEC);
     if (i) {
 	rb_sys_fail("mprotect");
     }
diff --git a/version.h b/version.h
index 444adc3f21..e7c472d9bf 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.0.0"
 #define RUBY_RELEASE_DATE "2014-02-17"
-#define RUBY_PATCHLEVEL 426
+#define RUBY_PATCHLEVEL 427
 
 #define RUBY_RELEASE_YEAR 2014
 #define RUBY_RELEASE_MONTH 2