diff --git a/src/libsrc/dgr.pla b/src/libsrc/dgr.pla
index 87806bd..64086e7 100755
--- a/src/libsrc/dgr.pla
+++ b/src/libsrc/dgr.pla
@@ -228,7 +228,7 @@ export asm dgrBLT(buff, x, y, width, height, src)
 	LSR
 	LDY	#$00
 	LDA	(SRC),Y
-	BMI	++
+        BMI	++
 	TAX
 	LDA	TMP
 end