diff --git a/scripts/compilation/qp_create_ninja.py b/scripts/compilation/qp_create_ninja.py
index a1cd7dad..52f06f7b 100755
--- a/scripts/compilation/qp_create_ninja.py
+++ b/scripts/compilation/qp_create_ninja.py
@@ -86,7 +86,9 @@ def ninja_create_env_variable(pwd_config_file):
     FC, FCFLAGS, IRPF90, IRPF90_FLAGS
     The env variable is usefull for the generation of EZFIO, and IRPF90
     """
-    l_string = []
+    l_string = ["builddir = {0}".format(os.path.dirname(ROOT_BUILD_NINJA)),
+                ""]
+
     for flag in ["FC", "FCFLAGS", "IRPF90", "IRPF90_FLAGS"]:
         str_ = "{0} = {1}".format(flag, get_compilation_option(pwd_config_file,
                                                                flag))
@@ -722,11 +724,13 @@ def ninja_dot_tree_build(path_module, l_module):
 # |  | (_) (_| |_| | (/_
 #
 def create_build_ninja_module(path_module):
-
-    l_string = ["rule update_build_ninja_root",
-                "   command = {0} update".format(__file__),
+    l_string = ["builddir = {0}".format(os.path.dirname(ROOT_BUILD_NINJA)),
                 ""]
 
+    l_string += ["rule update_build_ninja_root",
+                 "   command = {0} update".format(__file__),
+                 ""]
+
     l_string += ["rule make_local_binaries",
                  "   command = ninja -f {0} module_{1}".format(
                      ROOT_BUILD_NINJA, path_module.rel), "   pool = console",
@@ -755,6 +759,8 @@ def create_build_ninja_module(path_module):
 
 
 def create_build_ninja_global():
+    l_string = ["builddir = {0}".format(os.path.dirname(ROOT_BUILD_NINJA)),
+                ""]
 
     l_string = ["rule update_build_ninja_root",
                 "   command = {0} update".format(__file__),
@@ -942,6 +948,6 @@ if __name__ == "__main__":
     # S a v e s #
     # ~#~#~#~#~ #
 
-    with open(join(QP_ROOT, "config", "build.ninja"), "w+") as f:
+    with open(ROOT_BUILD_NINJA, "w+") as f:
         f.write(header)
         f.write("\n".join(l_string))
diff --git a/scripts/module/qp_install_module.py b/scripts/module/qp_install_module.py
index 541fdf9f..1c9911a6 100755
--- a/scripts/module/qp_install_module.py
+++ b/scripts/module/qp_install_module.py
@@ -23,7 +23,7 @@ try:
     from module_handler import ModuleHandler, get_dict_child
     from module_handler import get_l_module_descendant
     from update_README import Doc_key, Needed_key
-    from qp_path import QP_SRC, QP_PLUGINS
+    from qp_path import QP_SRC, QP_PLUGINS, QP_ROOT
 except ImportError:
     print "Please check if you have sourced the .quantum_package.rc"
     print "(`source .quantum_package.rc`)"
@@ -163,9 +163,11 @@ if __name__ == '__main__':
                 subprocess.check_call(["qp_create_ninja.py", "update"])
             except:
                 raise
-    
-            print "Done"
+
+            print "[ OK ]"
             print "You can now compile as usual"
+            print "`cd {0} ; ninja` for exemple".format(QP_ROOT)
+            print " or --in developement mode-- you can cd in a directory and compile here"
 
     elif arguments["uninstall"]: