diff --git a/src/services/flow_frontend.py b/src/services/flow_frontend.py
index 785bc74c..4b74fa0f 100644
--- a/src/services/flow_frontend.py
+++ b/src/services/flow_frontend.py
@@ -169,8 +169,8 @@ def _map_frontend_image_aspect_ratio(aspect_ratio: str) -> int:
             "IMAGE_ASPECT_RATIO_PORTRAIT": 2,
             "IMAGE_ASPECT_RATIO_16_9": 3,
             "IMAGE_ASPECT_RATIO_LANDSCAPE": 3,
-            "IMAGE_ASPECT_RATIO_LANDSCAPE_FOUR_THREE": 4,
-            "IMAGE_ASPECT_RATIO_PORTRAIT_THREE_FOUR": 5,
+            "IMAGE_ASPECT_RATIO_LANDSCAPE_FOUR_THREE": 5,
+            "IMAGE_ASPECT_RATIO_PORTRAIT_THREE_FOUR": 4,
         }
         try:
             return mapping[str(aspect_ratio or "").strip().upper()]
diff --git a/tests/test_flow_image_rollout.py b/tests/test_flow_image_rollout.py
index 0a9ae337..d715b2c6 100644
--- a/tests/test_flow_image_rollout.py
+++ b/tests/test_flow_image_rollout.py
@@ -257,8 +257,8 @@ async def test_browser_modes_submit_explicit_models_using_local_captcha(self):
             ("IMAGE_ASPECT_RATIO_LANDSCAPE", 3),
             ("IMAGE_ASPECT_RATIO_PORTRAIT", 2),
             ("IMAGE_ASPECT_RATIO_SQUARE", 1),
-            ("IMAGE_ASPECT_RATIO_LANDSCAPE_FOUR_THREE", 4),
-            ("IMAGE_ASPECT_RATIO_PORTRAIT_THREE_FOUR", 5),
+            ("IMAGE_ASPECT_RATIO_LANDSCAPE_FOUR_THREE", 5),
+            ("IMAGE_ASPECT_RATIO_PORTRAIT_THREE_FOUR", 4),
         )
         for mode in ("browser", "personal"):
             for model in ("BELUGA", "HARBOR_SEAL", "GEM_PIX_2"):