diff --git a/frigate/config.py b/frigate/config.py
index d464bb9702..6ff88dc00d 100644
--- a/frigate/config.py
+++ b/frigate/config.py
@@ -792,22 +792,21 @@ def runtime_config(self) -> FrigateConfig:
                     **camera_config.motion.dict(exclude_unset=True),
                 )
 
-            config.cameras[name] = camera_config
-
             # check runtime config
-            for name, camera in config.cameras.items():
-                assigned_roles = list(
-                    set([r for i in camera.ffmpeg.inputs for r in i.roles])
+            assigned_roles = list(
+                set([r for i in camera_config.ffmpeg.inputs for r in i.roles])
+            )
+            if camera_config.record.enabled and not "record" in assigned_roles:
+                raise ValueError(
+                    f"Camera {name} has record enabled, but record is not assigned to an input."
                 )
-                if camera.record.enabled and not "record" in assigned_roles:
-                    raise ValueError(
-                        f"Camera {name} has record enabled, but record is not assigned to an input."
-                    )
 
-                if camera.rtmp.enabled and not "rtmp" in assigned_roles:
-                    raise ValueError(
-                        f"Camera {name} has rtmp enabled, but rtmp is not assigned to an input."
-                    )
+            if camera_config.rtmp.enabled and not "rtmp" in assigned_roles:
+                raise ValueError(
+                    f"Camera {name} has rtmp enabled, but rtmp is not assigned to an input."
+                )
+
+            config.cameras[name] = camera_config
 
         return config
 
diff --git a/frigate/test/test_config.py b/frigate/test/test_config.py
index 92b30d542b..d1f2416e6b 100644
--- a/frigate/test/test_config.py
+++ b/frigate/test/test_config.py
@@ -752,6 +752,56 @@ def test_fails_on_missing_role(self):
         frigate_config = FrigateConfig(**config)
         self.assertRaises(ValueError, lambda: frigate_config.runtime_config)
 
+    def test_works_on_missing_role_multiple_cams(self):
+
+        config = {
+            "mqtt": {"host": "mqtt"},
+            "rtmp": {"enabled": False},
+            "cameras": {
+                "back": {
+                    "ffmpeg": {
+                        "inputs": [
+                            {
+                                "path": "rtsp://10.0.0.1:554/video",
+                                "roles": ["detect"],
+                            },
+                            {
+                                "path": "rtsp://10.0.0.1:554/video2",
+                                "roles": ["record"],
+                            },
+                        ]
+                    },
+                    "detect": {
+                        "height": 1080,
+                        "width": 1920,
+                        "fps": 5,
+                    },
+                },
+                "cam2": {
+                    "ffmpeg": {
+                        "inputs": [
+                            {
+                                "path": "rtsp://10.0.0.1:554/video",
+                                "roles": ["detect"],
+                            },
+                            {
+                                "path": "rtsp://10.0.0.1:554/video2",
+                                "roles": ["record"],
+                            },
+                        ]
+                    },
+                    "detect": {
+                        "height": 1080,
+                        "width": 1920,
+                        "fps": 5,
+                    },
+                },
+            },
+        }
+
+        frigate_config = FrigateConfig(**config)
+        runtime_config = frigate_config.runtime_config
+
     def test_global_detect(self):
 
         config = {