diff --git a/polymer/eduke32/build/include/m32script.h b/polymer/eduke32/build/include/m32script.h
index aa2731b93..a5111d731 100644
--- a/polymer/eduke32/build/include/m32script.h
+++ b/polymer/eduke32/build/include/m32script.h
@@ -92,6 +92,7 @@ enum GameEvent_t {
     EVENT_SAVEMAP,
     EVENT_PRELOADMAP,
     EVENT_PRESAVEMAP,
+    EVENT_PREDRAW2DSCREEN,
     MAXEVENTS
 };
 
diff --git a/polymer/eduke32/build/src/build.c b/polymer/eduke32/build/src/build.c
index ade115f67..0d631fead 100644
--- a/polymer/eduke32/build/src/build.c
+++ b/polymer/eduke32/build/src/build.c
@@ -3481,6 +3481,8 @@ void overheadeditor(void)
 
             setup_sideview_sincos();
 
+            VM_OnEvent(EVENT_PREDRAW2DSCREEN, -1);
+
             if (graphicsmode && (!m32_sideview || m32_sideelev == 512))
             {
                 Bmemset(show2dsector, 0, sizeof(show2dsector));
diff --git a/polymer/eduke32/source/m32def.c b/polymer/eduke32/source/m32def.c
index 489b4b6ee..22bd7a880 100644
--- a/polymer/eduke32/source/m32def.c
+++ b/polymer/eduke32/source/m32def.c
@@ -3471,6 +3471,7 @@ static void C_AddDefaultDefinitions(void)
     C_AddDefinition("EVENT_SAVEMAP", EVENT_SAVEMAP, LABEL_EVENT);
     C_AddDefinition("EVENT_PRELOADMAP", EVENT_PRELOADMAP, LABEL_EVENT);
     C_AddDefinition("EVENT_PRESAVEMAP", EVENT_PRESAVEMAP, LABEL_EVENT);
+    C_AddDefinition("EVENT_PREDRAW2DSCREEN", EVENT_PREDRAW2DSCREEN, LABEL_EVENT);
 
     C_AddDefinition("CLIPMASK0", CLIPMASK0, LABEL_DEFINE);
     C_AddDefinition("CLIPMASK1", CLIPMASK1, LABEL_DEFINE);