diff --git a/source/build/include/build.h b/source/build/include/build.h
index 0fe195e8a..e116fd3c5 100644
--- a/source/build/include/build.h
+++ b/source/build/include/build.h
@@ -1342,6 +1342,10 @@ extern GrowArray<char *> g_defModules;
 extern GrowArray<char *> g_clipMapFiles;
 #endif
 
+EXTERN intptr_t voxoff[MAXVOXELS][MAXVOXMIPS]; // used in KenBuild
+EXTERN int8_t voxreserve[(MAXVOXELS+7)>>3];
+EXTERN int8_t voxrotate[(MAXVOXELS+7)>>3];
+
 #ifdef USE_OPENGL
 // TODO: dynamically allocate this
 
@@ -1361,9 +1365,6 @@ typedef struct
 
 # define EXTRATILES (MAXTILES/8)
 
-EXTERN intptr_t voxoff[MAXVOXELS][MAXVOXMIPS]; // used in KenBuild
-EXTERN int8_t voxreserve[(MAXVOXELS+7)>>3];
-EXTERN int8_t voxrotate[(MAXVOXELS+7)>>3];
 EXTERN int32_t mdinited;
 EXTERN tile2model_t tile2model[MAXTILES+EXTRATILES];