diff --git a/ParadisEO-GPU/tutoriel/OneMax/testSimulatedAnnealing.cu b/ParadisEO-GPU/tutoriel/OneMax/testSimulatedAnnealing.cu
index 06dcca2ee..fb21d2d67 100644
--- a/ParadisEO-GPU/tutoriel/OneMax/testSimulatedAnnealing.cu
+++ b/ParadisEO-GPU/tutoriel/OneMax/testSimulatedAnnealing.cu
@@ -106,7 +106,7 @@ rng.reseed(seed);
 //solution sol(size);
 solution sol(vecSize);
 
-for(int i=0;i<vecSize;i++) cout<<sol[i]<<"  ";
+for(unsigned int i=0;i<vecSize;i++) cout<<sol[i]<<"  ";
 cout<<endl;
 
 /* =========================================================