diff --git a/tcl/target/eos_s3.cfg b/tcl/target/eos_s3.cfg
index f6016fb30..150ef4e31 100644
--- a/tcl/target/eos_s3.cfg
+++ b/tcl/target/eos_s3.cfg
@@ -26,7 +26,7 @@ if { [info exists CPUTAPID] } {
    }
 }
 
-swj_newdap $_CHIPNAME cpu -irlen 4 -irmask 0xf -expected-id _CPUTAPID
+swj_newdap $_CHIPNAME cpu -irlen 4 -irmask 0xf -expected-id $_CPUTAPID
 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
 
 set _TARGETNAME $_CHIPNAME.cpu