diff --git a/configure b/configure
index 5c04e1da2c..e55bdec388 100755
--- a/configure
+++ b/configure
@@ -4340,6 +4340,9 @@ cat > help_mp.h << EOF
 #include "$_mp_help"
 EOF
 
+echo "Adding untranslated messages to help_mp.h"
+./help_diff.sh $_mp_help <help_mp-en.h >> help_mp.h
+
 #############################################################################
 
 cat << EOF
diff --git a/help_diff.sh b/help_diff.sh
new file mode 100755
index 0000000000..82c1a8c770
--- /dev/null
+++ b/help_diff.sh
@@ -0,0 +1,28 @@
+#! /bin/bash
+
+# This script walks through the master (stdin) help/message file, and
+# prints (stdout) only those messages which are missing from the help
+# file given as parameter ($1).
+#
+# Example: help_mp-en.sh help_mp-hu.h < help_mp-en.h > missing.h
+
+curr="x"
+
+while read -r line ; do
+
+if ( echo $line | cut -d ' ' -f 1 | grep '^#define' > /dev/null ); then
+    curr=`echo $line | cut -d ' ' -f 2`
+    if ( grep "$curr " $1 > /dev/null ); then
+	curr="x"
+    fi
+else
+    if test x"$line" = x; then
+	curr="x"
+    fi
+fi
+
+if test $curr != "x" ; then
+    echo "$line"
+fi
+
+done < help_mp-en.h