diff --git a/makepanda/makepanda.py b/makepanda/makepanda.py
index a5cf6fe48d..d5b1394c64 100755
--- a/makepanda/makepanda.py
+++ b/makepanda/makepanda.py
@@ -1492,6 +1492,7 @@ def WriteConfigSettings():
         plugin_config["P3D_PLUGIN_LOG_BASENAME3"] = ""
         plugin_config["P3D_PLUGIN_P3D_PLUGIN"] = ""
         plugin_config["P3D_PLUGIN_P3DPYTHON"] = ""
+        plugin_config["P3D_COREAPI_VERSION_STR"] = COREAPI_VERSION
 
     if (RUNTIME):
         dtool_config["HAVE_P3D_PLUGIN"] = '1'