diff --git a/test6502.cpp b/test6502.cpp
index 97848e7..60bf96c 100644
--- a/test6502.cpp
+++ b/test6502.cpp
@@ -55,7 +55,7 @@ std::string read_bus_and_disassemble(const BUS &bus, int pc)
     buf[1] = bus.read(pc + 1);
     buf[2] = bus.read(pc + 2);
     buf[3] = bus.read(pc + 3);
-    auto [bytes, dis] = disassemble_6502(pc - 1, buf);
+    auto [bytes, dis] = disassemble_6502(pc, buf);
     return dis;
 }