diff --git a/doc/makepanda/makepanda.py b/doc/makepanda/makepanda.py
index dcaa79ec2c..21204ecd6f 100755
--- a/doc/makepanda/makepanda.py
+++ b/doc/makepanda/makepanda.py
@@ -564,7 +564,6 @@ if (PREFIX.count('"')  or THIRDPARTY.count('"')):
 PANDASOURCE=os.path.dirname(os.path.abspath(sys.path[0]))
 
 if ((os.path.exists(os.path.join(PANDASOURCE,"makepanda/makepanda.py"))==0) or
-    (os.path.exists(os.path.join(PANDASOURCE,"makepanda/makepanda.sln"))==0) or
     (os.path.exists(os.path.join(PANDASOURCE,"dtool","src","dtoolbase","dtoolbase.h"))==0) or
     (os.path.exists(os.path.join(PANDASOURCE,"panda","src","pandabase","pandabase.h"))==0)):
     sys.exit("I am unable to locate the root of the panda source tree.")