diff --git a/makepanda/makepanda.py b/makepanda/makepanda.py
index 462f65a2a8..55ffcec8e1 100755
--- a/makepanda/makepanda.py
+++ b/makepanda/makepanda.py
@@ -3262,7 +3262,8 @@ if (PkgSkip("VISION") ==0) and (not RUNTIME):
 if (PkgSkip("ROCKET") ==0) and (not RUNTIME):
   OPTS=['DIR:panda/src/rocket', 'BUILDING:ROCKET', 'ROCKET']
   TargetAdd('p3rocket_composite1.obj', opts=OPTS, input='p3rocket_composite1.cxx')
-  IGATEFILES=GetDirectoryContents('panda/src/rocket', ["rocketInputHandler*", "rocketRegion*"])
+  IGATEFILES=GetDirectoryContents('panda/src/rocket', ["rocketInputHandler.h",
+    "rocketInputHandler.cxx", "rocketRegion.h", "rocketRegion.cxx", "rocketRegion_ext.I"])
   TargetAdd('libp3rocket.in', opts=OPTS, input=IGATEFILES)
   TargetAdd('libp3rocket.in', opts=['IMOD:p3rocket', 'ILIB:libp3rocket', 'SRCDIR:panda/src/rocket'])
   TargetAdd('libp3rocket_igate.obj', input='libp3rocket.in', opts=["DEPENDENCYONLY"])