diff --git a/jacobi/openmp/not_opt/script/run.sh b/jacobi/openmp/not_opt/script/run.sh
index b0d90058f7a792f1d4a7a4cc30088a827833ccd2..eb86912f5c6b3abdfc8294465536de7e2d35e85a 100755
--- a/jacobi/openmp/not_opt/script/run.sh
+++ b/jacobi/openmp/not_opt/script/run.sh
@@ -53,7 +53,7 @@ for OMP in ${OMP_THREADS[@]}
 do
     # not necessary because the clause 'num_threads'
     # is specified in the source code
-    # export OMP_NUM_THREADS=${OMP}
+    export OMP_NUM_THREADS=${OMP}
 
     # run the application
     time ${EXEC} ${GRID_SIZE_X} ${GRID_SIZE_Y} ${OMP} |& tee ${EXEC}_OMP_${OMP}_output.txt