diff --git a/tcl/target/stm32f3x.cfg b/tcl/target/stm32f3x.cfg
index 1f0514346..31993ff80 100644
--- a/tcl/target/stm32f3x.cfg
+++ b/tcl/target/stm32f3x.cfg
@@ -44,11 +44,12 @@ jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CP
 if { [info exists BSTAPID] } {
    set _BSTAPID $BSTAPID
 } else {
-  # See STM Document RM0316
-  # Section 29.6.2
-  set _BSTAPID 0x06432041
+  # STM Document RM0316 rev 2 Section 30.6.2 says 0x06432041
+  # but STM32F303VCT6 rev Y has 0x06422041
+  set _BSTAPID1 0x06422041
+  set _BSTAPID2 0x06432041
 }
-jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID
+jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID1 -expected-id $_BSTAPID2
 
 set _TARGETNAME $_CHIPNAME.cpu
 target create $_TARGETNAME cortex_m3 -endian $_ENDIAN -chain-position $_TARGETNAME