diff --git a/klausur-service/backend/cv_preprocessing.py b/klausur-service/backend/cv_preprocessing.py
index 133d47f..71c4f50 100644
--- a/klausur-service/backend/cv_preprocessing.py
+++ b/klausur-service/backend/cv_preprocessing.py
@@ -113,13 +113,13 @@ def detect_and_fix_orientation(img_bgr: np.ndarray) -> Tuple[np.ndarray, int]:
         if rotate == 0 or confidence < 1.0:
             return img_bgr, 0
 
-        # Apply rotation
+        # Apply rotation — OSD rotate is the clockwise correction needed
         if rotate == 180:
             corrected = cv2.rotate(img_bgr, cv2.ROTATE_180)
         elif rotate == 90:
-            corrected = cv2.rotate(img_bgr, cv2.ROTATE_90_COUNTERCLOCKWISE)
-        elif rotate == 270:
             corrected = cv2.rotate(img_bgr, cv2.ROTATE_90_CLOCKWISE)
+        elif rotate == 270:
+            corrected = cv2.rotate(img_bgr, cv2.ROTATE_90_COUNTERCLOCKWISE)
         else:
             return img_bgr, 0