diff --git a/tools/multiplex/tests/lit.cfg b/tools/multiplex/tests/lit.cfg
index 52c1000..69df2fd 100644
--- a/tools/multiplex/tests/lit.cfg
+++ b/tools/multiplex/tests/lit.cfg
@@ -50,6 +50,10 @@
     " " + config.test_openmp_flags + \
     " " + config.test_extra_flags
 
+# to run with icc INTEL_LICENSE_FILE must be set
+if 'INTEL_LICENSE_FILE' in os.environ:
+    config.environment['INTEL_LICENSE_FILE'] = os.environ['INTEL_LICENSE_FILE']
+
 # Allow XFAIL to work
 config.target_triple = [ ]
 for feature in config.test_compiler_features: