diff --git a/osbuild/monitor.py b/osbuild/monitor.py
index 17bf02563..f0491914d 100644
--- a/osbuild/monitor.py
+++ b/osbuild/monitor.py
@@ -62,14 +62,15 @@ def with_origin(self, origin: Optional[str]) -> "Context":
         if origin is None or origin == self._origin:
             return self
         ctx = copy.copy(self)
-        ctx.set_origin(origin)
+        ctx.origin = origin
         return ctx
 
     @property
     def origin(self):
         return self._origin
 
-    def set_origin(self, origin: str):
+    @origin.setter
+    def origin(self, origin: str):
         self._origin = origin
 
     @property
diff --git a/test/mod/test_monitor.py b/test/mod/test_monitor.py
index 7bfd5b74e..a8244e4a8 100644
--- a/test/mod/test_monitor.py
+++ b/test/mod/test_monitor.py
@@ -143,7 +143,7 @@ def test_context():
     assert ctx_dict["id"] == "75bf3feab3d5662744c3ac38406ba73142aeb67666b1180bc1006f913b18f792"
     assert len(ctx_dict) == 1
 
-    ctx.set_origin("org.osbuild.test-2")
+    ctx.origin = "org.osbuild.test-2"
     ctx_dict = ctx.as_dict()
     # should be a full dict again
     assert "origin" in ctx_dict
@@ -151,7 +151,7 @@ def test_context():
     assert ctx_dict["pipeline"]["name"] == "test-pipeline"
     assert ctx_dict["pipeline"]["stage"]["name"] == "org.osbuild.noop"
 
-    ctx.set_origin("org.osbuild.test")
+    ctx.origin = "org.osbuild.test"
     ctx_dict = ctx.as_dict()
     # should only have id again (old context ID)
     assert ctx_dict["id"] == "75bf3feab3d5662744c3ac38406ba73142aeb67666b1180bc1006f913b18f792"