diff --git a/algo/unpack/CommonUnpacker.h b/algo/unpack/CommonUnpacker.h
index a0fb3eb84b12905d18761f564c34c859e7ad7408..e4e54eddf86b4caeb37b8eb1dfcca6e6d5b8bfbd 100644
--- a/algo/unpack/CommonUnpacker.h
+++ b/algo/unpack/CommonUnpacker.h
@@ -110,11 +110,13 @@ namespace cbm::algo
 
         if (algo == fAlgos.end()) {
           if (!Contains(legalEqIds, msDesc.eq_id)) {
-            L_(error) << "Invalid equip id " << int{msDesc.eq_id} << " for subsystem " << ToString(subsystem);
+            L_(error) << "Invalid equip id " << std::hex << int{msDesc.eq_id} << std::dec << " for subsystem "
+                      << ToString(subsystem);
             monitorOut.errInvalidEqId++;
           }
           else {
-            L_(error) << "Invalid system version " << int{msDesc.sys_ver} << " for subsystem " << ToString(subsystem);
+            L_(error) << "Invalid system version " << std::hex << int{msDesc.sys_ver} << std::dec << " for subsystem "
+                      << ToString(subsystem);
             monitorOut.errInvalidSysVer++;
           }
           continue;