diff --git a/ChangeLog b/ChangeLog
index 933ecf12b0..ab50b6c05f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,6 @@
-Wed Oct 13 00:03:46 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Wed Oct 13 00:18:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* st.c (MurmurMagic): get rid of literal overflow.
 
 	* configure.in (RUBY_CHECK_PRINTF_PREFIX): check for printf format
 	  specifier if possible.
diff --git a/st.c b/st.c
index ec518e936a..11e3b5d71a 100644
--- a/st.c
+++ b/st.c
@@ -1003,13 +1003,15 @@ strhash(st_data_t arg)
 #define MURMUR 2
 #endif
 
+#define MurmurMagic_1 (st_index_t)0xc6a4a793
+#define MurmurMagic_2 (st_index_t)0x5bd1e995
 #if MURMUR == 1
-#define MurmurMagic 0xc6a4a793
+#define MurmurMagic MurmurMagic_1
 #elif MURMUR == 2
 #if SIZEOF_ST_INDEX_T > 4
-#define MurmurMagic 0xc6a4a7935bd1e995
+#define MurmurMagic ((MurmurMagic_1 << 32) | MurmurMagic_2)
 #else
-#define MurmurMagic 0x5bd1e995
+#define MurmurMagic MurmurMagic_2
 #endif
 #endif