diff --git a/tcl/target/lsch3_common.cfg b/tcl/target/lsch3_common.cfg
index f48d59b9d..ad88b2e1b 100644
--- a/tcl/target/lsch3_common.cfg
+++ b/tcl/target/lsch3_common.cfg
@@ -51,8 +51,8 @@ proc release_cpu {cpu} {
 	}
 
 	# Release the cpu; it will start executing something bogus
-	mem2array regs 32 $RST_BRRL 1
-	mww $RST_BRRL [expr {$regs(0) | 1 << $cpu}]
+	set reg [read_memory $RST_BRRL 32 1]
+	mww $RST_BRRL [expr {$reg | 1 << $cpu}]
 
 	if {$not_halted} {
 		resume