diff --git a/ChangeLog b/ChangeLog
index fc32aca..0724190 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2009-06-10  Aleksey Demakov  <ademakov@gmail.com>
+
+	* jit/jit-rules-x86.ins (JIT_OP_BR_LFALSE): add opcode rule.
+
 2009-06-10  Michele Tartara  <mikyt@users.sourceforge.net>
 
 	* jit/jit-rules-x86.ins (JIT_OP_BR_LTRUE): add opcode rule.
diff --git a/jit/jit-rules-x86.ins b/jit/jit-rules-x86.ins
index 6f25df7..95f57db 100644
--- a/jit/jit-rules-x86.ins
+++ b/jit/jit-rules-x86.ins
@@ -1249,6 +1249,12 @@ JIT_OP_BR_IGE_UN: branch
 		inst = output_branch(func, inst, 0x73 /* ge_un */, insn);
 	}
 
+JIT_OP_BR_LFALSE: branch
+	[lreg] -> {
+		x86_alu_reg_reg(inst, X86_OR, $1, %1);
+		inst = output_branch(func, inst, 0x74 /* eq */, insn);
+	}
+
 JIT_OP_BR_LTRUE: branch
 	[lreg] -> {
 		x86_alu_reg_reg(inst, X86_OR, $1, %1);