diff --git a/src/brulijam/shapebuilder.lua b/src/brulijam/shapebuilder.lua
index 91ccced..1d7ee73 100644
--- a/src/brulijam/shapebuilder.lua
+++ b/src/brulijam/shapebuilder.lua
@@ -47,8 +47,8 @@ for k,v in pairs(lines) do
     yStart = string.find(v, "y=\"")
     yEnd = string.find(v, "\" st")
 
-    xStr = string.sub(v, xStart, xEnd)
-    yStr = string.sub(v, yStart, yEnd)
+    xStr = string.sub(v, xStart+3, xEnd-1)
+    yStr = string.sub(v, yStart+3, yEnd-1)
 
     x = tonumber(xStr)
     y = tonumber(yStr)