diff --git a/js/public/ProfilingCategory.h b/js/public/ProfilingCategory.h
index 4993a44ee837..5773f7499f5c 100644
--- a/js/public/ProfilingCategory.h
+++ b/js/public/ProfilingCategory.h
@@ -96,6 +96,7 @@
   BEGIN_CATEGORY(MEDIA, "Media", "orange")                                    \
     SUBCATEGORY(MEDIA, MEDIA_CUBEB, "Cubeb")                                  \
     SUBCATEGORY(MEDIA, MEDIA_PLAYBACK, "Playback")                            \
+    SUBCATEGORY(MEDIA, MEDIA_RT, "Real-time rendering")                       \
   END_CATEGORY
 
 namespace JS {
diff --git a/mozglue/baseprofiler/public/BaseProfilingCategory.h b/mozglue/baseprofiler/public/BaseProfilingCategory.h
index 5603b5facdf2..d466df9bf5c1 100644
--- a/mozglue/baseprofiler/public/BaseProfilingCategory.h
+++ b/mozglue/baseprofiler/public/BaseProfilingCategory.h
@@ -107,6 +107,7 @@ namespace baseprofiler {
   BEGIN_CATEGORY(MEDIA, "Media", "orange")                                     \
     SUBCATEGORY(MEDIA, MEDIA_CUBEB, "Cubeb")                                   \
     SUBCATEGORY(MEDIA, MEDIA_PLAYBACK, "Playback")                             \
+    SUBCATEGORY(MEDIA, MEDIA_RT, "Real-time processing")                       \
   END_CATEGORY
 
 // An enum that lists all possible category pairs in one list.