diff --git a/src/target/target/stm32.cfg b/src/target/target/stm32.cfg
index ed6cec4cd..2c3e07096 100644
--- a/src/target/target/stm32.cfg
+++ b/src/target/target/stm32.cfg
@@ -36,11 +36,13 @@ if { [info exists BSTAPID ] } {
 } else {
   # See STM Document RM0008
   # Section 26.6.2
-  # Medium Density RevA
+  # Low density devices, Rev A
+  set _BSTAPID 0x06412041
+  # Medium density devices, Rev A
   set _BSTAPID 0x06410041
-  # Rev B and Rev Z
+  # Medium density devices, Rev B and Rev Z
   set _BSTAPID 0x16410041
-  # High Density Devices, Rev A
+  # High density devices, Rev A
   set _BSTAPID 0x06414041
 }   
 jtag newtap $_CHIPNAME bs  -irlen 5 -ircapture 0x1 -irmask 0x1 -expected-id $_BSTAPID