diff --git a/src/locales/de-CH/default.js b/src/locales/de-CH/default.js
index b0c24f981..267f6a275 100644
--- a/src/locales/de-CH/default.js
+++ b/src/locales/de-CH/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   {
     fields: require('../de/fields.json'),
   },
diff --git a/src/locales/de/default.js b/src/locales/de/default.js
index 1853921fe..485258b64 100644
--- a/src/locales/de/default.js
+++ b/src/locales/de/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   {
     fields: require('./fields.json'),
   },
diff --git a/src/locales/en/default.js b/src/locales/en/default.js
index 376314241..7dfdeb8ee 100644
--- a/src/locales/en/default.js
+++ b/src/locales/en/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   // Don't import the fields as it's a 1:1 mapping anyway
   // { fields: require('./fields.json') },
   require('./texts.json'),
diff --git a/src/locales/es/default.js b/src/locales/es/default.js
index 1853921fe..485258b64 100644
--- a/src/locales/es/default.js
+++ b/src/locales/es/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   {
     fields: require('./fields.json'),
   },
diff --git a/src/locales/fr-CA/default.js b/src/locales/fr-CA/default.js
index 1da4afb03..b8c426bf0 100644
--- a/src/locales/fr-CA/default.js
+++ b/src/locales/fr-CA/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   {
     fields: require('../fr/fields.json'),
   },
diff --git a/src/locales/fr-CH/default.js b/src/locales/fr-CH/default.js
index 1da4afb03..b8c426bf0 100644
--- a/src/locales/fr-CH/default.js
+++ b/src/locales/fr-CH/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   {
     fields: require('../fr/fields.json'),
   },
diff --git a/src/locales/fr/default.js b/src/locales/fr/default.js
index 1853921fe..485258b64 100644
--- a/src/locales/fr/default.js
+++ b/src/locales/fr/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   {
     fields: require('./fields.json'),
   },
diff --git a/src/locales/it-CH/default.js b/src/locales/it-CH/default.js
index 793fdee34..246a85553 100644
--- a/src/locales/it-CH/default.js
+++ b/src/locales/it-CH/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   {
     fields: require('../it/fields.json'),
   },
diff --git a/src/locales/it/default.js b/src/locales/it/default.js
index 1853921fe..485258b64 100644
--- a/src/locales/it/default.js
+++ b/src/locales/it/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   {
     fields: require('./fields.json'),
   },
diff --git a/src/locales/ro/default.js b/src/locales/ro/default.js
index 1853921fe..485258b64 100644
--- a/src/locales/ro/default.js
+++ b/src/locales/ro/default.js
@@ -1,4 +1,5 @@
-export default Object.assign(
+import Utils from '../../utils';
+export default Utils.mergeDeep(
   {
     fields: require('./fields.json'),
   },
diff --git a/src/utils.js b/src/utils.js
index 31bf85456..c08334eed 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -398,4 +398,31 @@ export default class Utils {
     return Boolean(data['stac_extensions'].find(uri => regexp.test(uri)));
   }
 
+  /**
+   * Deep merge two objects.
+   * @param target
+   * @param ...sources
+   */
+  static mergeDeep(target, ...sources) {
+    if (!sources.length) {
+      return target;
+    }
+    const source = sources.shift();
+
+    if (Utils.isObject(target) && Utils.isObject(source)) {
+      for (const key in source) {
+        if (Utils.isObject(source[key])) {
+          if (!target[key]) {
+            Object.assign(target, { [key]: {} });
+          }
+          Utils.mergeDeep(target[key], source[key]);
+        } else {
+          Object.assign(target, { [key]: source[key] });
+        }
+      }
+    }
+
+    return Utils.mergeDeep(target, ...sources);
+  }
+
 }
\ No newline at end of file