diff --git a/pandatool/src/fltprogs/Sources.pp b/pandatool/src/fltprogs/Sources.pp
index 82438b10c2..28c5afefa6 100644
--- a/pandatool/src/fltprogs/Sources.pp
+++ b/pandatool/src/fltprogs/Sources.pp
@@ -66,7 +66,7 @@
 
   #define OTHER_LIBS \
     egg:c pandaegg:m \
-    linmath:c panda:m \
+    putil:c linmath:c panda:m \
     express:c pandaexpress:m \
     dtoolutil:c dtoolbase:c dconfig:c dtoolconfig:m dtool:m pystub