diff --git a/common/sampling.cpp b/common/sampling.cpp
index 07d7153384..90f48c5a05 100644
--- a/common/sampling.cpp
+++ b/common/sampling.cpp
@@ -564,6 +564,7 @@ char common_sampler_type_to_chr(enum common_sampler_type cnstr) {
         case COMMON_SAMPLER_TYPE_XTC:         return 'x';
         case COMMON_SAMPLER_TYPE_INFILL:      return 'i';
         case COMMON_SAMPLER_TYPE_PENALTIES:   return 'e';
+        case COMMON_SAMPLER_TYPE_POWER_LAW:   return 'w';
         default : return '?';
     }
 }
@@ -580,6 +581,7 @@ std::string common_sampler_type_to_str(enum common_sampler_type cnstr) {
         case COMMON_SAMPLER_TYPE_XTC:         return "xtc";
         case COMMON_SAMPLER_TYPE_INFILL:      return "infill";
         case COMMON_SAMPLER_TYPE_PENALTIES:   return "penalties";
+        case COMMON_SAMPLER_TYPE_POWER_LAW:   return "power_law";
         default : return "";
     }
 }