diff --git a/ChangeLog b/ChangeLog
index e956e8bb6..95de9ec95 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2009-02-17  Mike Spivey  <mike@comlab.ox.ac.uk>
+
+	* lightning/i386/core.h: Fix blunder in operand order.
+
 2009-02-17  Paolo Bonzini  <bonzini@gnu.org>
 
 	* lightning/i386/fp-32.h: Another fix to jit_fp_btest.
diff --git a/lightning/i386/core.h b/lightning/i386/core.h
index 86aee39aa..2f017f987 100644
--- a/lightning/i386/core.h
+++ b/lightning/i386/core.h
@@ -63,7 +63,7 @@
 	((rd == forced) ? JITSORRY("Register conflict for " # op) :	\
 	 (rs == forced)	? op :						\
 	 jit_save (forced)						\
-	  ? (jit_pushr_i(forced), jit_movr_l(rs, forced), op,		\
+	  ? (jit_pushr_i(forced), jit_movr_l(forced, rs), op,		\
 	     jit_popr_i(forced))					\
 	  : (jit_movr_l(rs, forced), op))