diff --git a/tcl/target/at91sam3u4e.cfg b/tcl/target/at91sam3u4e.cfg
index 242b53ee0..e549185ae 100644
--- a/tcl/target/at91sam3u4e.cfg
+++ b/tcl/target/at91sam3u4e.cfg
@@ -1,5 +1,5 @@
 # common stuff
-source [find target/at91sam3uxx.cfg]
+source [find target/at91sam3uXX.cfg]
 
 # size is automatically "calculated" by probing
 set _FLASHNAME $_CHIPNAME.flash