diff --git a/fithesis3/fithesis.dtx b/fithesis3/fithesis.dtx
index e5a6ff0448330dd6108d902701c709b0a1d3333c..9198f3569938e1c2ba3d567ad533e509dff3a164 100644
--- a/fithesis3/fithesis.dtx
+++ b/fithesis3/fithesis.dtx
@@ -356,9 +356,11 @@
 % The \marg{\texttt{id}=identifier} pair sets the identifier
 % of the thesis author to \textit{identifier}. This usually
 % corresponds to a unique identifier of the author within the
-% information system of the given university.
+% information system of the given university. The default value of
+% the macro is |\thesis@@{placeholders@id}|.
 %    \begin{macrocode}
-\define@key{thesis}{id}{%
+\def\thesis@id{\thesis@@{placeholders@id}}
+  \define@key{thesis}{id}{%
   \def\thesis@id{#1}}
 %    \end{macrocode}
 % \end{macro}
diff --git a/fithesis3/locale/czech.dtx b/fithesis3/locale/czech.dtx
index 2b0666a977b4882022b7b2ca1d00744245873d0a..cdc983c9e634049187921616f9276fab422c57dc 100644
--- a/fithesis3/locale/czech.dtx
+++ b/fithesis3/locale/czech.dtx
@@ -31,6 +31,7 @@
 \def\thesis@czech@placeholders@programme{Název studijního
   programu}
 \def\thesis@czech@placeholders@field{Název studijního oboru}
+\def\thesis@czech@placeholders@id{Identifikátor}
 \def\thesis@czech@assignment{MĂ­sto tohoto listu vloĹľte kopii
   oficiálního podepsaného zadání práce.}
 \def\thesis@czech@declaration{Text prohlášení ...}
@@ -43,6 +44,7 @@
 \def\thesis@czech@keywordsTitle{Klíčová slova}
 \def\thesis@czech@thanksTitle{Poděkování}
 \def\thesis@czech@declarationTitle{Prohlášení}
+\def\thesis@czech@idTitle{ID}
 \def\thesis@czech@winter{Jaro}
 \def\thesis@czech@summer{Podzim}
 \def\thesis@czech@semester{%
@@ -76,8 +78,9 @@
 % \fi\file{locale/mu/czech.def}
 % This is the Czech locale file specific to the Masaryk
 % University in Brno. It replaces the \texttt{universityName}
-% placeholder with the correct value and defines a placeholder
-% declaration text.
+% placeholder with the correct value and defines the
+% \texttt{declaration}, \texttt{placeholders@id} and
+% \texttt{idTitle} strings.
 % \iffalse
 %<*mu>
 % \fi\begin{macrocode}
@@ -90,6 +93,10 @@
   \thesis@czech@gender@koncovka\ samostatnÄ› a
   pouĹľil\thesis@czech@gender@koncovka\ jen prameny
   uvedené~v seznamu literatury.}
+\def\thesis@czech@placeholders@id{UÄŚO}
+
+% Různé
+\def\thesis@czech@idTitle{UÄŚO}
 %    \end{macrocode}\iffalse
 %</mu>
 % \fi\file{locale/mu/law/czech.def}
diff --git a/fithesis3/locale/english.dtx b/fithesis3/locale/english.dtx
index 6149592cd3d27df7e64858f045974e246dc0dd7e..1ed7d130d4d7f529eb21a5ed597e8ffbccce8f55 100644
--- a/fithesis3/locale/english.dtx
+++ b/fithesis3/locale/english.dtx
@@ -1,7 +1,6 @@
 % \file{locale/english.def}
 % This is the base file of the English locale. It defines all the
-% private macros mandated by the locale file interface. 
-%
+% private macros mandated by the locale file interface.
 % \iffalse
 %<*base>
 % \fi\begin{macrocode}
@@ -21,6 +20,7 @@
 \def\thesis@english@placeholders@department{Department name}
 \def\thesis@english@placeholders@programme{Study programme name}
 \def\thesis@english@placeholders@field{The field of study}
+\def\thesis@english@placeholders@id{Identifier}
 \def\thesis@english@assignment{Replace this page with a copy
   of the official signed thesis assignment.}
 \def\thesis@english@declaration{Declaration text ...}
@@ -33,6 +33,7 @@
 \def\thesis@english@keywordsTitle{Keywords}
 \def\thesis@english@thanksTitle{Acknowledgement}
 \def\thesis@english@declarationTitle{Declaration}
+\def\thesis@english@idTitle{ID}
 \def\thesis@english@winter{Spring}
 \def\thesis@english@summer{Fall}
 \def\thesis@english@semester{%
@@ -55,17 +56,22 @@
 % This is the English locale file specific to the Masaryk
 % University in Brno. It replaces the \texttt{universityName}
 % placeholder with the correct value and defines the
-% \texttt{declarationEn} string.
+% \texttt{declaration}, \texttt{placeholders@id} and
+% \texttt{idTitle} strings.
 % \iffalse
 %<*mu>
 % \fi\begin{macrocode}
 \ProvidesFile{fithesis3/locale/mu/english.def}[2015/04/18]
 \def\thesis@english@universityName{Masaryk University}
 \def\thesis@english@declaration{%
-  Hereby I declare that this paper is my original authorial work, 
+  Hereby I declare that this paper is my original authorial work,
   which I have worked out by my own. All sources, references and
   literature used or excerpted during elaboration of this work are
   properly cited and listed in complete reference to the due source.}
+\def\thesis@english@placeholders@id{UÄŚO}
+
+% Miscellaneous
+\def\thesis@english@idTitle{UÄŚO}
 %    \end{macrocode}\iffalse
 %</mu>
 % \fi\file{locale/mu/law/english.def}
diff --git a/fithesis3/locale/slovak.dtx b/fithesis3/locale/slovak.dtx
index cfbcf2a1ca2c4b91cf1c96700d4211cdf7035639..b404b614c23134b8919b4808e5335615b03ffc7d 100644
--- a/fithesis3/locale/slovak.dtx
+++ b/fithesis3/locale/slovak.dtx
@@ -1,6 +1,6 @@
 % \file{locale/slovak.def}
 % This is the base file of the Slovak locale. It defines all the
-% private macros mandated by the locale file interface. 
+% private macros mandated by the locale file interface.
 % \begin{macro}{\thesis@slovak@gender@koncovka}
 % The locale file defines the |\thesis@slovak@gender@koncovka|
 % macro, which expands to the correct verb ending based on the
@@ -29,6 +29,7 @@
 \def\thesis@slovak@placeholders@programme{Názov študijného
   programu}
 \def\thesis@slovak@placeholders@field{Název študijného odboru}
+\def\thesis@slovak@placeholders@id{Identifikátor}
 \def\thesis@slovak@assignment{Namiesto tejto stránky vložte kópiu
   oficiálneho podpísaného zadania práce.}
 \def\thesis@slovak@declaration{Text prehlásenie ...}
@@ -41,6 +42,7 @@
 \def\thesis@slovak@keywordsTitle{Kľúčové slová}
 \def\thesis@slovak@thanksTitle{PoÄŹakovanie}
 \def\thesis@slovak@declarationTitle{Prehlásenie}
+\def\thesis@slovak@idTitle{ID}
 \def\thesis@slovak@winter{Jar}
 \def\thesis@slovak@summer{Jeseň}
 \def\thesis@slovak@semester{%
@@ -74,8 +76,9 @@
 % \fi\file{locale/mu/slovak.def}
 % This is the Slovak locale file specific to the Masaryk
 % University in Brno. It replaces the \texttt{universityName}
-% placeholder with the correct value and defines a placeholder
-% declaration text.
+% placeholder with the correct value and defines the
+% \texttt{declaration}, \texttt{placeholders@id} and
+% \texttt{idTitle} strings.
 % \iffalse
 %<*mu>
 % \fi\begin{macrocode}
@@ -88,6 +91,10 @@
   slovak@typeName@akuzativ} vypracoval%
   \thesis@slovak@gender@koncovka\ samostatne len s~pouĹľitĂ­m
   uvedenej literatúry a prameňov.}
+\def\thesis@slovak@placeholders@id{UÄŚO}
+
+% RĂ´zne
+\def\thesis@slovak@idTitle{UÄŚO}
 %    \end{macrocode}\iffalse
 %</mu>
 % \fi\file{locale/mu/law/slovak.def}