diff --git a/libqfieldsync/project.py b/libqfieldsync/project.py
index 7494101..a91b567 100644
--- a/libqfieldsync/project.py
+++ b/libqfieldsync/project.py
@@ -1,3 +1,6 @@
+import json
+
+
 class ProjectProperties(object):
     def __init__(self):
         raise RuntimeError("This object holds only project property static variables")
@@ -22,6 +25,7 @@ def __init__(self):
     GEOFENCING_LAYER = "/geofencingLayer"
     GEOFENCING_BEHAVIOR = "/geofencingBehavior"
     GEOFENCING_SHOULD_PREVENT_DIGITIZING = "/geofencingShouldPreventDigitizing"
+    MAP_THEMES_ACTIVE_LAYER = "/mapThemesActiveLayers"
 
     class BaseMapType(object):
         def __init__(self):
@@ -158,6 +162,27 @@ def geofencing_should_prevent_digitizing(self, value):
             "qfieldsync", ProjectProperties.GEOFENCING_SHOULD_PREVENT_DIGITIZING, value
         )
 
+    @property
+    def map_themes_active_layer(self):
+        entries_json, _ = self.project.readEntry(
+            "qfieldsync", ProjectProperties.MAP_THEMES_ACTIVE_LAYER
+        )
+
+        try:
+            entries = json.loads(entries_json)
+        except Exception:
+            entries = {}
+
+        return entries
+
+    @map_themes_active_layer.setter
+    def map_themes_active_layer(self, value):
+        self.project.writeEntry(
+            "qfieldsync",
+            ProjectProperties.MAP_THEMES_ACTIVE_LAYER,
+            json.dumps(value),
+        )
+
     @property
     def geofencing_is_active(self):
         geofencing_is_active, _ = self.project.readBoolEntry(