diff --git a/src/tcl/commands.tcl b/src/tcl/commands.tcl
index f42047f7f..d671d7860 100644
--- a/src/tcl/commands.tcl
+++ b/src/tcl/commands.tcl
@@ -1,6 +1,6 @@
 # implements Tcl procedures/functions
 proc peek {address} {
-	return [openocd mdw $address]
+	return [openocd_throw "mdw $address"]
 }
 
 # Production command