diff --git a/.hgtags-top-repo b/.hgtags-top-repo
index b4f5b7c73a6..c2c23ebab23 100644
--- a/.hgtags-top-repo
+++ b/.hgtags-top-repo
@@ -370,3 +370,4 @@ f80c841ae2545eaf9acd2724bccc305d98cefbe2 jdk-9+124
 9aa7d40f3a453f51e47f4c1b19eff5740a74a9f8 jdk-9+125
 3a58466296d36944454756ef01e7513ac5e14a16 jdk-9+126
 8fa686245bd2a072ece3392743460030f0854520 jdk-9+127
+b30ae794d974d7dd3eb4e84203f70021823fa6c6 jdk-9+128
diff --git a/common/autoconf/boot-jdk.m4 b/common/autoconf/boot-jdk.m4
index 30dcf844a88..d3fd298d704 100644
--- a/common/autoconf/boot-jdk.m4
+++ b/common/autoconf/boot-jdk.m4
@@ -345,6 +345,9 @@ AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK_ARGUMENTS],
   # Disable special log output when a debug build is used as Boot JDK...
   ADD_JVM_ARG_IF_OK([-XX:-PrintVMOptions -XX:-UnlockDiagnosticVMOptions -XX:-LogVMOutput],boot_jdk_jvmargs,[$JAVA])
 
+  # Force en-US environment
+  ADD_JVM_ARG_IF_OK([-Duser.language=en -Duser.country=US],boot_jdk_jvmargs,[$JAVA])
+
   # Apply user provided options.
   ADD_JVM_ARG_IF_OK([$with_boot_jdk_jvmargs],boot_jdk_jvmargs,[$JAVA])
 
diff --git a/common/autoconf/generated-configure.sh b/common/autoconf/generated-configure.sh
index e8b5461b512..961e90e1142 100644
--- a/common/autoconf/generated-configure.sh
+++ b/common/autoconf/generated-configure.sh
@@ -5094,7 +5094,7 @@ VS_SDK_PLATFORM_NAME_2013=
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1467960715
+DATE_WHEN_GENERATED=1469202305
 
 ###############################################################################
 #
@@ -65048,6 +65048,23 @@ $as_echo_n "checking flags for boot jdk java command ... " >&6; }
   fi
 
 
+  # Force en-US environment
+
+  $ECHO "Check if jvm arg is ok: -Duser.language=en -Duser.country=US" >&5
+  $ECHO "Command: $JAVA -Duser.language=en -Duser.country=US -version" >&5
+  OUTPUT=`$JAVA -Duser.language=en -Duser.country=US -version 2>&1`
+  FOUND_WARN=`$ECHO "$OUTPUT" | $GREP -i warn`
+  FOUND_VERSION=`$ECHO $OUTPUT | $GREP " version \""`
+  if test "x$FOUND_VERSION" != x && test "x$FOUND_WARN" = x; then
+    boot_jdk_jvmargs="$boot_jdk_jvmargs -Duser.language=en -Duser.country=US"
+    JVM_ARG_OK=true
+  else
+    $ECHO "Arg failed:" >&5
+    $ECHO "$OUTPUT" >&5
+    JVM_ARG_OK=false
+  fi
+
+
   # Apply user provided options.
 
   $ECHO "Check if jvm arg is ok: $with_boot_jdk_jvmargs" >&5