diff --git a/linux-user/alpha/cpu_loop.c b/linux-user/alpha/cpu_loop.c
index 96466b23f9..caeea97b9d 100644
--- a/linux-user/alpha/cpu_loop.c
+++ b/linux-user/alpha/cpu_loop.c
@@ -151,7 +151,7 @@ void cpu_loop(CPUAlphaState *env)
                     info.si_code = TARGET_FPE_FLTRES;
                     break;
                 case TARGET_GEN_ROPRAND:
-                    info.si_code = 0;
+                    info.si_code = TARGET_FPE_FLTUNK;
                     break;
                 default:
                     info.si_signo = TARGET_SIGTRAP;