diff --git a/panda/src/sgraph/Sources.pp b/panda/src/sgraph/Sources.pp
index 1714fce2e6..b74da37421 100644
--- a/panda/src/sgraph/Sources.pp
+++ b/panda/src/sgraph/Sources.pp
@@ -37,7 +37,7 @@
   #define LOCAL_LIBS \
     sgraph mathutil graph putil
   #define OTHER_LIBS \
-    pystub
+    $[OTHER_LIBS] pystub
 
   #define SOURCES \
     test_sgraph.cxx