diff --git a/avrdude.build.bash b/avrdude.build.bash
index 8a1c7ab..48fb591 100755
--- a/avrdude.build.bash
+++ b/avrdude.build.bash
@@ -59,6 +59,6 @@ then
 	cp ../../avrdude-files/avrdude .
 	if [ `uname -s` == "Darwin" ]
 	then
-		sed -i 's/LD_LIBRARY_PATH/DYLD_LIBRARY_PATH/g' avrdude 
+		sed -i '' 's/LD_LIBRARY_PATH/DYLD_LIBRARY_PATH/g' avrdude
 	fi
 fi