diff --git a/tools/install.py b/tools/install.py
index c495746c8c4..67f72ea027c 100755
--- a/tools/install.py
+++ b/tools/install.py
@@ -150,6 +150,7 @@ def files(action):
     'src/node_internals.h',
     'src/node_object_wrap.h',
     'src/node_version.h',
+    'src/smalloc.h',
   ], 'include/node/')
 
   if 'false' == variables.get('node_shared_cares'):