diff --git a/waflib/Tools/ifort.py b/waflib/Tools/ifort.py
index bb0580ec..60d703f1 100644
--- a/waflib/Tools/ifort.py
+++ b/waflib/Tools/ifort.py
@@ -154,6 +154,7 @@ def gather_ifort_versions(conf, versions):
 		major = version[0:2]
 		versions.append(('intel ' + major, targets))
 
+@conf
 def setup_ifort(conf, versions, arch = False):
 	"""
 	Checks installed compilers and targets and returns the first combination from the user's
diff --git a/waflib/Tools/msvc.py b/waflib/Tools/msvc.py
index da4a194b..979c3b55 100644
--- a/waflib/Tools/msvc.py
+++ b/waflib/Tools/msvc.py
@@ -96,6 +96,7 @@ def options(opt):
 	opt.add_option('--msvc_targets', type='string', help = 'msvc targets, eg: "x64,arm"', default='')
 	opt.add_option('--no-msvc-lazy', action='store_false', help = 'lazily check msvc target environments', default=True, dest='msvc_lazy')
 
+@conf
 def setup_msvc(conf, versions, arch=False):
 	"""
 	Checks installed compilers and targets and returns the first combination from the user's