diff --git a/arch/alpha/isa/decoder.isa b/arch/alpha/isa/decoder.isa
index e09673269..f46e32fd1 100644
--- a/arch/alpha/isa/decoder.isa
+++ b/arch/alpha/isa/decoder.isa
@@ -810,7 +810,7 @@ decode OPCODE default Unknown::unknown() {
                 AlphaPseudo::addsymbol(xc->xcBase(), R16, R17);
             }}, IsNonSpeculative);
             0x54: m5panic({{
-                panic("M5 panic instruction called.");
+                panic("M5 panic instruction called at pc=%#x.", xc->readPC());
             }}, IsNonSpeculative);
 
         }