diff --git a/src/c/labyrinth.c b/src/c/labyrinth.c
index 7cb860a..6880654 100644
--- a/src/c/labyrinth.c
+++ b/src/c/labyrinth.c
@@ -70,7 +70,7 @@ void labyrinthschritte(lab laby, int hoehe, int breite, int schritte, int versuc
 
         for(int i = 0; i < hoehe; i++){
             for(int j = 0; j < breite; j++){
-                if(laby[i][j] == '1'){
+                if(laby[i][j] == MAUER){
                     printf("■ ");
                 }
                 else if(laby[i][j] == WEG){
diff --git a/src/c/labyrinth.h b/src/c/labyrinth.h
index 0147da5..cd64f0a 100644
--- a/src/c/labyrinth.h
+++ b/src/c/labyrinth.h
@@ -7,6 +7,7 @@
 #define MAXSPALTEN 10
 #define WEG '0'
 #define MARKIERT 'X'
+#define MAUER '1'
 
 typedef char lab[MAXZEILEN][MAXSPALTEN];
 int printlabyrinth(lab laby, int hoehe, int breite);