diff --git a/HTML5-Space-Invaders.html b/HTML5-Space-Invaders.html
index b21c2b5..ff07d42 100644
--- a/HTML5-Space-Invaders.html
+++ b/HTML5-Space-Invaders.html
@@ -358,7 +358,7 @@
 				var container = $("#game"); 
 				var img, canvas, context, frameCounter, isGameOver;
 				//var spriteSheet = "si_sprite_sheet_bw.png";
-				var spriteSheet = "data:image/png;base64,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%3D";					
+        var spriteSheet = "data:image/png;base64,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";					
 				
 				var sprites = {
 					alien_1: 			{	id: "alien_1",