diff --git a/polymer/build/src/mdsprite.c b/polymer/build/src/mdsprite.c
index f6243975d..a361e2e17 100644
--- a/polymer/build/src/mdsprite.c
+++ b/polymer/build/src/mdsprite.c
@@ -1478,6 +1478,25 @@ static int md3draw(md3model *m, spritetype *tspr)
 
     f = m->interpol; g = 1-f;
 
+    if (m->interpol < 0 || m->interpol > 1 ||
+        m->cframe < 0 || m->cframe >= m->numframes ||
+        m->nframe < 0 || m->nframe >= m->numframes)
+    {
+        OSD_Printf("Model frame out of bounds!\n");
+        if (m->interpol < 0)
+            m->interpol = 0;
+        if (m->interpol > 1)
+            m->interpol = 1;
+        if (m->cframe < 0)
+            m->cframe = 0;
+        if (m->cframe >= m->numframes)
+            m->cframe = m->numframes - 1;
+        if (m->nframe < 0)
+            m->nframe = 0;
+        if (m->nframe >= m->numframes)
+            m->nframe = m->numframes - 1;
+    }
+
     if (m->head.flags == 1337)
     {
         // md2
diff --git a/polymer/eduke32/source/game.c b/polymer/eduke32/source/game.c
index d7fc95815..636dbeb13 100644
--- a/polymer/eduke32/source/game.c
+++ b/polymer/eduke32/source/game.c
@@ -4628,6 +4628,7 @@ int EGS(int whatsect,int s_x,int s_y,int s_z,int s_pn,int s_s,int s_xr,int s_yr,
     else show2dsprite[i>>3] &= ~(1<<(i&7));
 
     clearbufbyte(&spriteext[i], sizeof(spriteexttype), 0);
+    clearbufbyte(&spritesmooth[i], sizeof(spritesmoothtype), 0);
 
     /*
         if(s->sectnum < 0)