diff --git a/litex/build/openocd.py b/litex/build/openocd.py
index 62644da5f..dc137938b 100644
--- a/litex/build/openocd.py
+++ b/litex/build/openocd.py
@@ -122,7 +122,7 @@ proc jtagstream_poll {tap tx n} {
     set txi [concat {*}$txi]
 """
         cfg += f"""
-    set rxi [split [drscan $tap {{*}}$txi {endstate}] " "]
+    set rxi [split [drscan $tap {{*}}$txi {endstate}]]
 """
         cfg += """
     #echo $txi:$rxi