diff --git a/src/Solver.cpp b/src/Solver.cpp
index 4677c4b..3758d0f 100644
--- a/src/Solver.cpp
+++ b/src/Solver.cpp
@@ -39,11 +39,11 @@ VectAffine Solver::TriangularSystem() const {
 	// on rajoute des 0 si il faut
 
 	Matrix fullOrigin {mat.GetColumnCount() - 1, 1};
-	for (int i = 0; i < mat.GetRawCount(); i++) {
+	for (std::size_t i = 0; i < mat.GetRawCount(); i++) {
 		fullOrigin.at(i, 0) = origin.at(i, 0);
 	}
 
-	for (int i = mat.GetRawCount(); i < mat.GetColumnCount() - 1; i++) {
+	for (std::size_t i = mat.GetRawCount(); i < mat.GetColumnCount() - 1; i++) {
 		fullOrigin.at(i, 0) = 0;
 	}