diff --git a/codes/data/LQGT_dataset.py b/codes/data/LQGT_dataset.py
index 83bc6a54..99fed582 100644
--- a/codes/data/LQGT_dataset.py
+++ b/codes/data/LQGT_dataset.py
@@ -28,6 +28,7 @@ class LQGTDataset(data.Dataset):
         self.sizes_LQ, self.sizes_GT = None, None
         self.paths_PIX, self.sizes_PIX = None, None
         self.LQ_env, self.GT_env, self.PIX_env = None, None, None  # environments for lmdbs
+        self.force_multiple = self.opt['force_multiple'] if 'force_multiple' in self.opt.keys() else 1
 
         self.paths_GT, self.sizes_GT = util.get_image_paths(self.data_type, opt['dataroot_GT'], opt['dataroot_GT_weights'])
         if 'dataroot_LQ' in opt.keys():
@@ -126,6 +127,16 @@ class LQGTDataset(data.Dataset):
             if img_LQ.ndim == 2:
                 img_LQ = np.expand_dims(img_LQ, axis=2)
 
+        # Enforce force_resize constraints.
+        h, w, _ = img_LQ.shape
+        if h % self.force_multiple != 0 or w % self.force_multiple != 0:
+            h, w = (w - w % self.force_multiple), (h - h % self.force_multiple)
+            img_LQ = cv2.resize(img_LQ, (h, w))
+            h *= scale
+            w *= scale
+            img_GT = cv2.resize(img_GT, (h, w))
+            img_PIX = cv2.resize(img_LQ, (h, w))
+
         if self.opt['phase'] == 'train':
             H, W, _ = img_GT.shape
             assert H >= GT_size and W >= GT_size