diff --git a/src/renderer/sw_engine/tvgSwRle.cpp b/src/renderer/sw_engine/tvgSwRle.cpp
index a994fcf2..36e67842 100644
--- a/src/renderer/sw_engine/tvgSwRle.cpp
+++ b/src/renderer/sw_engine/tvgSwRle.cpp
@@ -451,17 +451,17 @@ static bool _setCell(RleWorker& rw, SwPoint pos)
        min_ex - 1 horizontal position. */
     pos -= rw.cellMin;
 
-    if (pos.x > rw.cellMax.x) pos.x = rw.cellMax.x;
+    //exceptions
+    if (pos.x < 0) pos.x = -1;
+    else if (pos.x > rw.cellMax.x) pos.x = rw.cellMax.x;
 
     //Are we moving to a different cell?
     if (pos != rw.cellPos) {
         //Record the current one if it is valid
         if (!rw.invalid && !_recordCell(rw)) return false;
+        rw.area = rw.cover = 0;
+        rw.cellPos = pos;
     }
-
-    rw.area = 0;
-    rw.cover = 0;
-    rw.cellPos = pos;
     rw.invalid = ((unsigned)pos.y >= (unsigned)rw.cellYCnt || pos.x >= rw.cellXCnt);
 
     return true;