diff --git a/src/moteur.c b/src/moteur.c
index dce8a77..3bfa2a1 100644
--- a/src/moteur.c
+++ b/src/moteur.c
@@ -180,6 +180,7 @@ inline void __attribute__((always_inline)) draw_stripe(image_t *tex, int texSamp
         : "=r" (oneConst)
         : "r" (oneConst)
     );
+    register int maxConst asm("r13") = viewport_w*viewport_h;
     for(int texPos = texSampleY; texPos < 64; ++texPos){
       if(screenPos >= -texSize){
         int vrampos = ffloor(screenPos)*vramSize+x;
@@ -189,6 +190,8 @@ inline void __attribute__((always_inline)) draw_stripe(image_t *tex, int texSamp
           gint_vram[vrampos] = pix;
           vrampos += vramSize;
           oldPos += oneConst;
+          if(vrampos >= maxConst)
+            return;
         }while(oldPos < screenPos+texSize);
       }
       screenPos += texSize;
diff --git a/src/moteur.h b/src/moteur.h
index 11b8303..ef01e34 100644
--- a/src/moteur.h
+++ b/src/moteur.h
@@ -10,7 +10,7 @@
 #define screen_w 396
 #define screen_h 224
 #define viewport_w 396
-#define viewport_h 224
+#define viewport_h 200
 #define max_dist fix(32) //en tuiles << 16, actuellement 32
 
 #define TINDEX_S 256