diff --git a/Makefile b/Makefile
index 6015247..9e158c9 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ rndwlkng:	rndwlkng.f90 Makefile genplotting.o
 
 rndwlkng.png:	rndwlkng Makefile
 	./rndwlkng
-	convert rndwlkng.png rndwlkng.png
+	convert rndwlkng.tga rndwlkng.png
 
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