diff --git a/src/dwarfs/categorizer/pcmaudio_categorizer.cpp b/src/dwarfs/categorizer/pcmaudio_categorizer.cpp
index 42aa1fea..ef2566c2 100644
--- a/src/dwarfs/categorizer/pcmaudio_categorizer.cpp
+++ b/src/dwarfs/categorizer/pcmaudio_categorizer.cpp
@@ -45,8 +45,8 @@ namespace po = boost::program_options;
 
 namespace {
 
-constexpr std::string_view const METADATA_CATEGORY{"metadata"};
-constexpr std::string_view const PCMAUDIO_CATEGORY{"pcmaudio"};
+constexpr std::string_view const METADATA_CATEGORY{"pcmaudio/metadata"};
+constexpr std::string_view const PCMAUDIO_CATEGORY{"pcmaudio/waveform"};
 
 constexpr size_t const MIN_PCMAUDIO_SIZE{32};