diff --git a/pandatool/src/eggprogs/lwoToEgg.cxx b/pandatool/src/eggprogs/lwoToEgg.cxx
index 2ddba3afd9..5a3f320f4b 100644
--- a/pandatool/src/eggprogs/lwoToEgg.cxx
+++ b/pandatool/src/eggprogs/lwoToEgg.cxx
@@ -8,6 +8,7 @@
 #include <lwoToEggConverter.h>
 #include <lwoHeader.h>
 #include <lwoInputFile.h>
+#include <config_lwo.h>
 
 ////////////////////////////////////////////////////////////////////
 //     Function: LwoToEgg::Constructor
@@ -74,6 +75,7 @@ run() {
 
 
 int main(int argc, char *argv[]) {
+  init_liblwo();
   LwoToEgg prog;
   prog.parse_command_line(argc, argv);
   prog.run();
diff --git a/pandatool/src/fltprogs/fltToEgg.cxx b/pandatool/src/fltprogs/fltToEgg.cxx
index 371f4b9be7..0199797145 100644
--- a/pandatool/src/fltprogs/fltToEgg.cxx
+++ b/pandatool/src/fltprogs/fltToEgg.cxx
@@ -6,6 +6,7 @@
 #include "fltToEgg.h"
 
 #include <fltToEggConverter.h>
+#include <config_flt.h>
 
 ////////////////////////////////////////////////////////////////////
 //     Function: FltToEgg::Constructor
@@ -78,6 +79,7 @@ run() {
 
 
 int main(int argc, char *argv[]) {
+  init_libflt();
   FltToEgg prog;
   prog.parse_command_line(argc, argv);
   prog.run();
diff --git a/pandatool/src/lwo/test_lwo.cxx b/pandatool/src/lwo/test_lwo.cxx
index d468295b7a..3fe3bfd909 100644
--- a/pandatool/src/lwo/test_lwo.cxx
+++ b/pandatool/src/lwo/test_lwo.cxx
@@ -5,9 +5,11 @@
 
 #include "lwoInputFile.h"
 #include "lwoChunk.h"
+#include "config_lwo.h"
 
 int
 main(int argc, char *argv[]) {
+  init_liblwo();
   if (argc != 2) {
     cerr << "test_lwo file.lwo\n";
     exit(1);