diff --git a/tcl/target/tmpa900.cfg b/tcl/target/tmpa900.cfg
index 90851f69c..cfb445e63 100644
--- a/tcl/target/tmpa900.cfg
+++ b/tcl/target/tmpa900.cfg
@@ -8,11 +8,8 @@ if { [info exists CHIPNAME] } {
    set  _CHIPNAME tmpa900
 }
 
-if { [info exists ENDIAN] } {
-   set  _ENDIAN $ENDIAN
-} else {
-   set  _ENDIAN little
-}
+# Toshiba TMPA900 series MCUs are always little endian as per datasheet.
+set _ENDIAN little
 
 if { [info exists CPUTAPID ] } {
    set _CPUTAPID $CPUTAPID
diff --git a/tcl/target/tmpa910.cfg b/tcl/target/tmpa910.cfg
index 36874d94d..4d4d3fc21 100644
--- a/tcl/target/tmpa910.cfg
+++ b/tcl/target/tmpa910.cfg
@@ -8,11 +8,8 @@ if { [info exists CHIPNAME] } {
    set  _CHIPNAME tmpa910
 }
 
-if { [info exists ENDIAN] } {
-   set  _ENDIAN $ENDIAN
-} else {
-   set  _ENDIAN little
-}
+# Toshiba TMPA910 series MCUs are always little endian as per datasheet.
+set _ENDIAN little
 
 if { [info exists CPUTAPID ] } {
    set _CPUTAPID $CPUTAPID