diff --git a/ujit_asm_tests.c b/ujit_asm_tests.c
index 72b5c829f5..3e2c28cca9 100644
--- a/ujit_asm_tests.c
+++ b/ujit_asm_tests.c
@@ -109,6 +109,7 @@ void run_tests()
 
     // lea
     //cb_set_pos(cb, 0); lea(cb, EBX, mem_opnd(32, RSP, 4)); check_bytes(cb, "8D5C2404");
+    cb_set_pos(cb, 0); lea(cb, RDX, mem_opnd(64, RCX, 8)); check_bytes(cb, "488D5108");
 
     // mov
     cb_set_pos(cb, 0); mov(cb, EAX, imm_opnd(7)); check_bytes(cb, "B807000000");