diff --git a/alib2data/src/regexp/RegExpAlphabetGetter.h b/alib2data/src/regexp/RegExpAlphabetGetter.h
index fdd6be7c75f2be49a92cc49fda56c9b5dc843f96..3dded28b2d9da29c6ed8a78287509fed5ef1bc24 100644
--- a/alib2data/src/regexp/RegExpAlphabetGetter.h
+++ b/alib2data/src/regexp/RegExpAlphabetGetter.h
@@ -5,8 +5,8 @@
  *      Author: Jan Travnicek
  */
 
-#ifndef REX_EXP_ALPHABET_GETTER_H_
-#define REX_EXP_ALPHABET_GETTER_H_
+#ifndef REG_EXP_ALPHABET_GETTER_H_
+#define REG_EXP_ALPHABET_GETTER_H_
 
 #include <set>
 #include "RegExp.h"
@@ -37,4 +37,4 @@ public:
 
 } /* namespace regexp */
 
-#endif /* REX_EXP_ALPHABET_GETTER_H_ */
+#endif /* REG_EXP_ALPHABET_GETTER_H_ */