diff --git a/AllenOnline/tests/refs/test_lumi.ref b/AllenOnline/tests/refs/test_lumi.ref
index 73ffc3209240fca16a129312f51bd0d251d15e2d..9571003d53bfa3854d11d3124a2829356c0319b5 100644
--- a/AllenOnline/tests/refs/test_lumi.ref
+++ b/AllenOnline/tests/refs/test_lumi.ref
@@ -16,6 +16,7 @@
 |-geometry_version                        = 'master'  (default: '')
 |-histo_calo                              = False  (default: False)
 |-histo_file                              = ''  (default: '')
+|-histo_string_width                      = 80  (default: 80)
 |-input_files                             = ['mep_lumi.mdf']  (default: [])
 |-input_manifest_file                     = ''  (default: '')
 |-input_process                           = ''  (default: '')
diff --git a/AllenOnline/tests/refs/test_lumi.ref.armv8.1_a b/AllenOnline/tests/refs/test_lumi.ref.armv8.1_a
index 7d123f1a3081dea11232bbb3dcb4baaf188e967a..6ed2c59aa8f4e3a61808f8bb06a7578740e5f5fd 100644
--- a/AllenOnline/tests/refs/test_lumi.ref.armv8.1_a
+++ b/AllenOnline/tests/refs/test_lumi.ref.armv8.1_a
@@ -16,6 +16,7 @@
 |-geometry_version                        = 'master'  (default: '')
 |-histo_calo                              = False  (default: False)
 |-histo_file                              = ''  (default: '')
+|-histo_string_width                      = 80  (default: 80)
 |-input_files                             = ['mep_lumi.mdf']  (default: [])
 |-input_manifest_file                     = ''  (default: '')
 |-input_process                           = ''  (default: '')
diff --git a/AllenOnline/tests/refs/test_lumi.ref.x86_64_v3-opt b/AllenOnline/tests/refs/test_lumi.ref.x86_64_v3-opt
index 7d123f1a3081dea11232bbb3dcb4baaf188e967a..6ed2c59aa8f4e3a61808f8bb06a7578740e5f5fd 100644
--- a/AllenOnline/tests/refs/test_lumi.ref.x86_64_v3-opt
+++ b/AllenOnline/tests/refs/test_lumi.ref.x86_64_v3-opt
@@ -16,6 +16,7 @@
 |-geometry_version                        = 'master'  (default: '')
 |-histo_calo                              = False  (default: False)
 |-histo_file                              = ''  (default: '')
+|-histo_string_width                      = 80  (default: 80)
 |-input_files                             = ['mep_lumi.mdf']  (default: [])
 |-input_manifest_file                     = ''  (default: '')
 |-input_process                           = ''  (default: '')