diff --git a/boards/pttu/tools/openocd-pttu.sh b/boards/pttu/tools/openocd-pttu.sh
index 95f11fa148..6a7da2196d 100755
--- a/boards/pttu/tools/openocd-pttu.sh
+++ b/boards/pttu/tools/openocd-pttu.sh
@@ -1,30 +1,30 @@
 #/bin/bash
 
 if [ $# -le 0 ]; then
-	echo "usage: $0 [openocd interface name] [openocd args]" >&2
-	echo "	common interfaces: olimex-arm-usb-ocd olimex-jtag-tiny olimex-jtag-tiny-a"
-	echo ""
-	echo "using default olimex-jtag-tiny-a"
-	INTERFACE=olimex-jtag-tiny-a
+    echo "usage: $0 [openocd interface name] [openocd args]" >&2
+    echo "  common interfaces: olimex-arm-usb-ocd olimex-jtag-tiny olimex-jtag-tiny-a"
+    echo ""
+    echo "using default olimex-jtag-tiny-a"
+    INTERFACE=olimex-jtag-tiny-a
 else
-	INTERFACE=$1
-	shift
+    INTERFACE=$1
+    shift
 fi
 
 if [ $# -ge 1 ]; then
-	COMMAND=$@
+    COMMAND=$@
 else
-	COMMAND="debug_level 1"
+    COMMAND="debug_level 1"
 fi
 
 if [ "${OS}" = "Windows_NT" ]; then
-	WINDOWS=1
+    WINDOWS=1
 fi
 
 if [ "x${WINDOWS}x" = "xx" ]; then
-	xterm -e "openocd -s ../../.. -f interface/${INTERFACE}.cfg -f board/pttu/tools/openocd-pttu.cfg -c \"${COMMAND}\"|| read" &
+    xterm -e "openocd -s ../../.. -f interface/${INTERFACE}.cfg -f board/pttu/tools/openocd-pttu.cfg -c \"${COMMAND}\"|| read" &
 else
-	echo ${COMMAND}
-	#cmd /C start "OpenOCD PTTU using ${INTERFACE}"
-	openocd-ftd2xx.exe -s ../../.. -f interface/${INTERFACE}.cfg -f board/pttu/tools/openocd-pttu.cfg -c "${COMMAND}"
+    echo ${COMMAND}
+    #cmd /C start "OpenOCD PTTU using ${INTERFACE}"
+    openocd-ftd2xx.exe -s ../../.. -f interface/${INTERFACE}.cfg -f board/pttu/tools/openocd-pttu.cfg -c "${COMMAND}"
 fi