diff --git a/data/presets/fields.json b/data/presets/fields.json
index 57940f1ec..8fab93ba8 100644
--- a/data/presets/fields.json
+++ b/data/presets/fields.json
@@ -1721,6 +1721,7 @@
             "icon": "source",
             "universal": true,
             "label": "Sources",
+            "snake_case": false,
             "options": [
                 "survey",
                 "local knowledge",
diff --git a/data/presets/fields/source.json b/data/presets/fields/source.json
index c9b746500..b4411e47e 100644
--- a/data/presets/fields/source.json
+++ b/data/presets/fields/source.json
@@ -4,6 +4,7 @@
     "icon": "source",
     "universal": true,
     "label": "Sources",
+    "snake_case": false,
     "options": [
         "survey",
         "local knowledge",