diff --git a/src/libsysprof-analyze/sysprof-callgraph.c b/src/libsysprof-analyze/sysprof-callgraph.c
index 593bfc20..3a83114b 100644
--- a/src/libsysprof-analyze/sysprof-callgraph.c
+++ b/src/libsysprof-analyze/sysprof-callgraph.c
@@ -169,7 +169,10 @@ sysprof_callgraph_class_init (SysprofCallgraphClass *klass)
   object_class->finalize = sysprof_callgraph_finalize;
 
   everything = _sysprof_symbol_new (g_ref_string_new_intern ("[Everything]"), NULL, NULL, 0, 0);
+  everything->is_everything = TRUE;
+
   untraceable = _sysprof_symbol_new (g_ref_string_new_intern ("[Unwindable]"), NULL, NULL, 0, 0);
+  everything->is_untraceable = TRUE;
 }
 
 static void
diff --git a/src/libsysprof-analyze/sysprof-document.c b/src/libsysprof-analyze/sysprof-document.c
index 66ed1823..c353cb9b 100644
--- a/src/libsysprof-analyze/sysprof-document.c
+++ b/src/libsysprof-analyze/sysprof-document.c
@@ -489,6 +489,7 @@ sysprof_document_load_processes (SysprofDocument *self)
                   process_info->symbol =
                     _sysprof_symbol_new (sysprof_strings_get (self->strings, wrapped),
                                          NULL, NULL, 0, 0);
+                  process_info->symbol->is_process = TRUE;
                 }
             }
         }
diff --git a/src/libsysprof-analyze/sysprof-symbol-private.h b/src/libsysprof-analyze/sysprof-symbol-private.h
index 9961c691..35e61e0c 100644
--- a/src/libsysprof-analyze/sysprof-symbol-private.h
+++ b/src/libsysprof-analyze/sysprof-symbol-private.h
@@ -39,6 +39,9 @@ struct _SysprofSymbol
   SysprofAddress end_address;
 
   guint is_context_switch : 1;
+  guint is_everything : 1;
+  guint is_untraceable : 1;
+  guint is_process : 1;
 };
 
 SysprofSymbol *_sysprof_symbol_new (GRefString     *name,