diff --git a/tcl/target/lpc2xxx.cfg b/tcl/target/lpc2xxx.cfg
index b946d44f8..11f1c48bc 100644
--- a/tcl/target/lpc2xxx.cfg
+++ b/tcl/target/lpc2xxx.cfg
@@ -24,6 +24,7 @@ proc setup_lpc2xxx {chip_name cputapids flash_size flash_variant workarea_size c
 
 	eval "jtag newtap $chip_name cpu -irlen 4 -ircapture 0x1 -irmask 0xf $expected_ids"
 
+	global _TARGETNAME
 	set _TARGETNAME $chip_name.cpu
 	target create $_TARGETNAME arm7tdmi -chain-position $_TARGETNAME