diff --git a/ffcv/transforms/utils/fast_crop.py b/ffcv/transforms/utils/fast_crop.py
index fbb13db4..34cb7835 100644
--- a/ffcv/transforms/utils/fast_crop.py
+++ b/ffcv/transforms/utils/fast_crop.py
@@ -16,7 +16,7 @@ def resize_crop(source, start_row, end_row, start_col, end_col, destination):
 @njit(parallel=False, fastmath=True, inline='always')
 def get_random_crop(height, width, scale, ratio):
     area = height * width
-    log_ratio = np.log(np.array(ratio))
+    log_ratio = np.log(ratio)
     for _ in range(10):
         target_area = area * np.random.uniform(scale[0], scale[1])
         aspect_ratio = np.exp(np.random.uniform(log_ratio[0], log_ratio[1]))
@@ -48,4 +48,4 @@ def get_center_crop(height, width, ratio):
     delta_h = (height - c) // 2
     delta_w = (width - c) // 2
 
-    return delta_h, delta_w, c, c
\ No newline at end of file
+    return delta_h, delta_w, c, c