diff --git a/src/libsysprof/sysprof-callgraph.h b/src/libsysprof/sysprof-callgraph.h
index 5c86274f..10b3e6fa 100644
--- a/src/libsysprof/sysprof-callgraph.h
+++ b/src/libsysprof/sysprof-callgraph.h
@@ -71,6 +71,8 @@ typedef enum _SysprofCallgraphCategory
   SYSPROF_CALLGRAPH_CATEGORY_CSS,
   SYSPROF_CALLGRAPH_CATEGORY_ICONS,
   SYSPROF_CALLGRAPH_CATEGORY_INPUT,
+  SYSPROF_CALLGRAPH_CATEGORY_IO,
+  SYSPROF_CALLGRAPH_CATEGORY_IPC,
   SYSPROF_CALLGRAPH_CATEGORY_KERNEL,
   SYSPROF_CALLGRAPH_CATEGORY_LAYOUT,
   SYSPROF_CALLGRAPH_CATEGORY_MAIN_LOOP,