diff --git a/debugger/db_disasm.c b/debugger/db_disasm.c
index 7ffd2a8..8d38f5a 100644
--- a/debugger/db_disasm.c
+++ b/debugger/db_disasm.c
@@ -733,8 +733,8 @@
 /*ab*/	{ "stos",  FALSE, LONG,  op1(DI),     0 },
 /*ac*/	{ "lods",  FALSE, BYTE,  op1(SI),     0 },
 /*ad*/	{ "lods",  FALSE, LONG,  op1(SI),     0 },
-/*ae*/	{ "scas",  FALSE, BYTE,  op1(SI),     0 },
-/*af*/	{ "scas",  FALSE, LONG,  op1(SI),     0 },
+/*ae*/	{ "scas",  FALSE, BYTE,  op1(DI),     0 },
+/*af*/	{ "scas",  FALSE, LONG,  op1(DI),     0 },
 
 /*b0*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },
 /*b1*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },