diff --git a/qmri_mp2rage/sub-1/anat/sub-1_inv-1_MP2RAGE.json b/qmri_mp2rage/sub-1/anat/sub-1_inv-1_MP2RAGE.json
index ff8746bab..5ff35ac82 100644
--- a/qmri_mp2rage/sub-1/anat/sub-1_inv-1_MP2RAGE.json
+++ b/qmri_mp2rage/sub-1/anat/sub-1_inv-1_MP2RAGE.json
@@ -1,4 +1,5 @@
 {
   "FlipAngle": 5,
-  "InversionTime": 0.8
+  "InversionTime": 0.8,
+  "Units": "arbitrary"
 }
diff --git a/qmri_mp2rage/sub-1/anat/sub-1_inv-2_MP2RAGE.json b/qmri_mp2rage/sub-1/anat/sub-1_inv-2_MP2RAGE.json
index 598e6e83c..d7b9a5798 100644
--- a/qmri_mp2rage/sub-1/anat/sub-1_inv-2_MP2RAGE.json
+++ b/qmri_mp2rage/sub-1/anat/sub-1_inv-2_MP2RAGE.json
@@ -1,4 +1,5 @@
 {
   "FlipAngle": 7,
-  "InversionTime": 2.7
+  "InversionTime": 2.7,
+  "Units": "arbitrary"
 }
diff --git a/qmri_mp2rageme/sub-1/anat/sub-1_echo-1_inv-2_MP2RAGE.json b/qmri_mp2rageme/sub-1/anat/sub-1_echo-1_inv-2_MP2RAGE.json
index 91206adc8..d14c45132 100644
--- a/qmri_mp2rageme/sub-1/anat/sub-1_echo-1_inv-2_MP2RAGE.json
+++ b/qmri_mp2rageme/sub-1/anat/sub-1_echo-1_inv-2_MP2RAGE.json
@@ -5,5 +5,6 @@
   "RepetitionTimePreparation": 6.723,
   "NumberShots": 150,
   "EchoTime": 0.006,
-  "MagneticFieldStrength": 7
+  "MagneticFieldStrength": 7,
+  "Units": "arbitrary"
 }
diff --git a/qmri_mp2rageme/sub-1/anat/sub-1_echo-2_inv-2_MP2RAGE.json b/qmri_mp2rageme/sub-1/anat/sub-1_echo-2_inv-2_MP2RAGE.json
index 2b3482a40..1c7449ac7 100644
--- a/qmri_mp2rageme/sub-1/anat/sub-1_echo-2_inv-2_MP2RAGE.json
+++ b/qmri_mp2rageme/sub-1/anat/sub-1_echo-2_inv-2_MP2RAGE.json
@@ -5,5 +5,6 @@
   "RepetitionTimePreparation": 6.723,
   "NumberShots": 150,
   "EchoTime": 0.0145,
-  "MagneticFieldStrength": 7
+  "MagneticFieldStrength": 7,
+  "Units": "arbitrary"
 }
diff --git a/qmri_mp2rageme/sub-1/anat/sub-1_echo-3_inv-2_MP2RAGE.json b/qmri_mp2rageme/sub-1/anat/sub-1_echo-3_inv-2_MP2RAGE.json
index f7a918771..86878453c 100644
--- a/qmri_mp2rageme/sub-1/anat/sub-1_echo-3_inv-2_MP2RAGE.json
+++ b/qmri_mp2rageme/sub-1/anat/sub-1_echo-3_inv-2_MP2RAGE.json
@@ -5,5 +5,6 @@
   "RepetitionTimePreparation": 6.723,
   "NumberShots": 150,
   "EchoTime": 0.023,
-  "MagneticFieldStrength": 7
+  "MagneticFieldStrength": 7,
+  "Units": "arbitrary"
 }
diff --git a/qmri_mp2rageme/sub-1/anat/sub-1_echo-4_inv-2_MP2RAGE.json b/qmri_mp2rageme/sub-1/anat/sub-1_echo-4_inv-2_MP2RAGE.json
index c4698f2d1..393c003cb 100644
--- a/qmri_mp2rageme/sub-1/anat/sub-1_echo-4_inv-2_MP2RAGE.json
+++ b/qmri_mp2rageme/sub-1/anat/sub-1_echo-4_inv-2_MP2RAGE.json
@@ -5,5 +5,6 @@
   "RepetitionTimePreparation": 6.723,
   "NumberShots": 150,
   "EchoTime": 0.0315,
-  "MagneticFieldStrength": 7
+  "MagneticFieldStrength": 7,
+  "Units": "arbitrary"
 }
diff --git a/qmri_mp2rageme/sub-1/anat/sub-1_inv-1_MP2RAGE.json b/qmri_mp2rageme/sub-1/anat/sub-1_inv-1_MP2RAGE.json
index 713da1516..98588dea8 100644
--- a/qmri_mp2rageme/sub-1/anat/sub-1_inv-1_MP2RAGE.json
+++ b/qmri_mp2rageme/sub-1/anat/sub-1_inv-1_MP2RAGE.json
@@ -4,5 +4,6 @@
   "RepetitionTimeExcitation": 0.0062,
   "RepetitionTimePreparation": 6.723,
   "NumberShots": 150,
-  "MagneticFieldStrength": 7
+  "MagneticFieldStrength": 7,
+  "Units": "arbitrary"
 }