diff --git a/makepanda/makepanda.py b/makepanda/makepanda.py
index ce8d63b64b..f11797c44f 100755
--- a/makepanda/makepanda.py
+++ b/makepanda/makepanda.py
@@ -1241,7 +1241,7 @@ def CompileCxx(obj,src,opts):
             if (building):
                 cmd += " /DBUILDING_" + building
 
-            if ("BIGOBJ" in opts) or GetTargetArch() == 'x64':
+            if ("BIGOBJ" in opts) or GetTargetArch() == 'x64' or not PkgSkip("EIGEN"):
                 cmd += " /bigobj"
 
             cmd += " /Zm300"