diff --git a/makepanda/makewheel.py b/makepanda/makewheel.py
index e490f1c05e..74ee15d7f1 100644
--- a/makepanda/makewheel.py
+++ b/makepanda/makewheel.py
@@ -28,7 +28,7 @@ default_platform = get_platform()
 
 if default_platform.startswith("linux-"):
     # Is this manylinux1?
-    if os.path.isfile("/lib/libc-2.5.so") and os.path.isdir("/opt/python"):
+    if (os.path.isfile("/lib/libc-2.5.so") or os.path.isfile("/lib64/libc-2.5.so")) and os.path.isdir("/opt/python"):
         default_platform = default_platform.replace("linux", "manylinux1")