diff --git a/ex7/ex7_2/ex7_2/Makefile b/ex7/ex7_2/ex7_2/Makefile
old mode 100644
new mode 100755
diff --git a/ex7/ex7_3/ex7_3/Makefile b/ex7/ex7_3/ex7_3/Makefile
old mode 100644
new mode 100755
diff --git a/ex7/ex7_4/ex7_4/Makefile b/ex7/ex7_4/ex7_4/Makefile
old mode 100644
new mode 100755