diff --git a/dtool/LocalSetup.pp b/dtool/LocalSetup.pp
index c260871f60..b55285f5ca 100644
--- a/dtool/LocalSetup.pp
+++ b/dtool/LocalSetup.pp
@@ -280,6 +280,9 @@ $[cdefine HAVE_OPENAL]
 /* Define if we have Freetype 2.0 or better available. */
 $[cdefine HAVE_FREETYPE]
 
+/* Define if we are using SpeedTree. */
+$[cdefine HAVE_SPEEDTREE]
+
 /* Define if we want to compile in a default font. */
 $[cdefine COMPILE_IN_DEFAULT_FONT]
 
diff --git a/makepanda/makepanda.py b/makepanda/makepanda.py
index 2fd18e113a..2384369f91 100755
--- a/makepanda/makepanda.py
+++ b/makepanda/makepanda.py
@@ -1475,6 +1475,7 @@ DTOOL_CONFIG=[
     ("HAVE_OPENAL",                    'UNDEF',                  'UNDEF'),
     ("HAVE_NVIDIACG",                  'UNDEF',                  'UNDEF'),
     ("HAVE_FREETYPE",                  'UNDEF',                  'UNDEF'),
+    ("HAVE_SPEEDTREE",                 'UNDEF',                  'UNDEF'),
     ("HAVE_FFTW",                      'UNDEF',                  'UNDEF'),
     ("HAVE_OPENSSL",                   'UNDEF',                  'UNDEF'),
     ("HAVE_NET",                       'UNDEF',                  'UNDEF'),