diff --git a/Source/functions/AbstractionLayers/Layer1/AbstractionLayer_1.cpp b/Source/functions/AbstractionLayers/Layer1/AbstractionLayer_1.cpp
index f588bc1..cd6ac30 100644
--- a/Source/functions/AbstractionLayers/Layer1/AbstractionLayer_1.cpp
+++ b/Source/functions/AbstractionLayers/Layer1/AbstractionLayer_1.cpp
@@ -106,7 +106,7 @@ void AbstractionLayer_1::setEdgeZero()
 bool AbstractionLayer_1::PlaceOfPartGood(coor myCoor, uint8_t& myPart)
 {
 
-    uint8_t negativePart(0)=0b00000000;
+    uint8_t negativePart = 0b00000000;
 
     negativePart or_eq (m_constraintMatrix[myCoor.col][myCoor.row+1].m_connections & 0b11000000);
     negativePart or_eq (m_constraintMatrix[myCoor.col-1][myCoor.row].m_connections & 0b00110000);
diff --git a/Source/header/solve.h b/Source/header/solve.h
index 71ad5e8..777b3fc 100755
--- a/Source/header/solve.h
+++ b/Source/header/solve.h
@@ -1,3 +1,6 @@
+#ifndef SOURCE_SOLVE_H
+#define SOURCE_SOLVE_H
+
 #include <vector>
 #include <iostream>
 #include "input.h"
@@ -39,10 +42,12 @@ private:
     static int randomed;
 };
 
-bool next(vector<LogEntry>& log, vector<PuzzlePiece*>& p_Box, Puzzle& puzzleMat);
-coor calculateNextCoor(vector<LogEntry>& log, vector<PuzzlePiece*>& p_Box, Puzzle& puzzleMat);
-void solve(vector<LogEntry>& log, vector<PuzzlePiece*>& p_Box, Puzzle& puzzleMat);
-void setsolution(vector<LogEntry>& log, vector<PuzzlePiece*>& p_Box, Puzzle& puzzleMat);
-bool backtrack(vector<LogEntry>& log, vector<PuzzlePiece*>& p_Box, puzzleMat);
+bool next(vector<LogEntry>& log, vector<Part*>& p_Box, Puzzle& puzzleMat);
+coor calculateNextCoor(vector<LogEntry>& log, vector<Part*>& p_Box, Puzzle& puzzleMat);
+void solve(vector<LogEntry>& log, vector<Part*>& p_Box, Puzzle& puzzleMat);
+void setsolution(vector<LogEntry>& log, vector<Part*>& p_Box, Puzzle& puzzleMat);
+bool backtrack(vector<LogEntry>& log, vector<Part*>& p_Box, puzzleMat);
 
-void createNextLogElement(vector<LogEntry>& log, vector<PuzzlePiece*>& p_Box, Puzzle& puzzleMat);
\ No newline at end of file
+void createNextLogElement(vector<LogEntry>& log, vector<Part*>& p_Box, Puzzle& puzzleMat);
+
+#endif //SOURCE_SOLVE_H
\ No newline at end of file