diff --git a/alib2algo/src/automaton/generate/NumberOfSymbolsAutomaton.h b/alib2algo/src/automaton/generate/NumberOfSymbolsAutomaton.h
index 23c0c95f78ffb658eda5cb02314b80e589788860..afd02100dc719e23d0be3cefaf845611b384fa37 100644
--- a/alib2algo/src/automaton/generate/NumberOfSymbolsAutomaton.h
+++ b/alib2algo/src/automaton/generate/NumberOfSymbolsAutomaton.h
@@ -21,8 +21,8 @@
  *	  Author: Tomas Pecka
  */
 
-#ifndef RANDOM_AUTOMATON_FACTORY_H_
-#define RANDOM_AUTOMATON_FACTORY_H_
+#ifndef _NUMBER_OF_SYMBOLS_AUTOMATON_H_
+#define _NUMBER_OF_SYMBOLS_AUTOMATON_H_
 
 #include <alib/set>
 #include <alib/string>
@@ -95,4 +95,4 @@ automaton::NFA < SymbolType, unsigned > NumberOfSymbolsAutomaton::generateNFA (
 
 } /* namespace automaton::generate */
 
-#endif /* RANDOM_AUTOMATON_FACTORY_H_ */
+#endif /* _NUMBER_OF_SYMBOLS_AUTOMATON_H_ */
diff --git a/alib2algo/src/automaton/generate/RandomTreeAutomatonFactory.h b/alib2algo/src/automaton/generate/RandomTreeAutomatonFactory.h
index 5620dd7809e400f19cee6dc78c74536e67d7a14a..f12d7450e985b037efc8450c9f371d5849fb3948 100644
--- a/alib2algo/src/automaton/generate/RandomTreeAutomatonFactory.h
+++ b/alib2algo/src/automaton/generate/RandomTreeAutomatonFactory.h
@@ -21,8 +21,8 @@
  *	  Author: Tomas Pecka
  */
 
-#ifndef RANDOM_AUTOMATON_FACTORY_H_
-#define RANDOM_AUTOMATON_FACTORY_H_
+#ifndef RANDOM_TREE_AUTOMATON_FACTORY_H_
+#define RANDOM_TREE_AUTOMATON_FACTORY_H_
 
 #include <alib/deque>
 #include <alib/set>
@@ -229,4 +229,4 @@ automaton::NFTA < SymbolType, unsigned > RandomTreeAutomatonFactory::LeslieConne
 
 } /* namespace automaton */
 
-#endif /* RANDOM_AUTOMATON_FACTORY_H_ */
+#endif /* RANDOM_TREE_AUTOMATON_FACTORY_H_ */
diff --git a/alib2algo/src/automaton/simplify/SingleInitialStateEpsilonTransition.h b/alib2algo/src/automaton/simplify/SingleInitialStateEpsilonTransition.h
index 15c78b9345d261457c1339cda18d5d5771ac5ba9..7268c0f21c4c6bf3b667c9ebca869b3e1b77ea85 100644
--- a/alib2algo/src/automaton/simplify/SingleInitialStateEpsilonTransition.h
+++ b/alib2algo/src/automaton/simplify/SingleInitialStateEpsilonTransition.h
@@ -21,8 +21,8 @@
  *	  Author: Jan Travnicek
  */
 
-#ifndef _SINGLE_INITIAL_STATE_H_
-#define _SINGLE_INITIAL_STATE_H_
+#ifndef _SINGLE_INITIAL_STATE_EPSILON_TRANSITION_H_
+#define _SINGLE_INITIAL_STATE_EPSILON_TRANSITION_H_
 
 #include <automaton/FSM/DFA.h>
 #include <automaton/FSM/NFA.h>
@@ -100,4 +100,4 @@ ext::require < isDFA < T > || isNFA < T > || isEpsilonNFA < T > || isExtendedNFA
 
 } /* namespace automaton */
 
-#endif /* _SINGLE_INITIAL_STATE_H_ */
+#endif /* _SINGLE_INITIAL_STATE_EPSILON_TRANSITION_H_ */