diff --git a/panda/src/speedtree/Sources.pp b/panda/src/speedtree/Sources.pp
index aac4737204..06c115efc4 100644
--- a/panda/src/speedtree/Sources.pp
+++ b/panda/src/speedtree/Sources.pp
@@ -39,6 +39,7 @@
     stTree.cxx
 
   #define INSTALL_HEADERS \
+    config_speedtree.h \
     speedtree_parameters.h \
     speedtree_api.h \
     speedTreeNode.h speedTreeNode.I \