diff --git a/basketballtrainer/models/pp_liteseg_rancrops.py b/basketballtrainer/models/pp_liteseg_rancrops.py
index d971961..9b1e07d 100644
--- a/basketballtrainer/models/pp_liteseg_rancrops.py
+++ b/basketballtrainer/models/pp_liteseg_rancrops.py
@@ -61,6 +61,7 @@ def __init__(self,
             resize_mode=resize_mode,
             pretrained=pretrained
         )
+        assert random_crops >= 0, 'Number of random crops should be a positive integer'
         self.__random_crops = random_crops
         self.__num_classes = num_classes
 
diff --git a/rancrop_model_variants/mean_aggregation/pp_liteseg_rancrops_pad_after_inference.py b/rancrop_model_variants/mean_aggregation/pp_liteseg_rancrops_pad_after_inference.py
index a77afa5..5d38600 100644
--- a/rancrop_model_variants/mean_aggregation/pp_liteseg_rancrops_pad_after_inference.py
+++ b/rancrop_model_variants/mean_aggregation/pp_liteseg_rancrops_pad_after_inference.py
@@ -63,6 +63,7 @@ def __init__(self,
             resize_mode=resize_mode,
             pretrained=pretrained
         )
+        assert random_crops >= 0, 'Number of random crops should be a positive integer'
         self.__random_crops = random_crops
         self.__num_classes = num_classes
 
diff --git a/rancrop_model_variants/mean_aggregation/pp_liteseg_rancrops_pad_before_inference.py b/rancrop_model_variants/mean_aggregation/pp_liteseg_rancrops_pad_before_inference.py
index 2dfa89b..e144383 100644
--- a/rancrop_model_variants/mean_aggregation/pp_liteseg_rancrops_pad_before_inference.py
+++ b/rancrop_model_variants/mean_aggregation/pp_liteseg_rancrops_pad_before_inference.py
@@ -62,6 +62,7 @@ def __init__(self,
             resize_mode=resize_mode,
             pretrained=pretrained
         )
+        assert random_crops >= 0, 'Number of random crops should be a positive integer'
         self.__random_crops = random_crops
 
     def forward(self, x):
diff --git a/rancrop_model_variants/softmax_plus_mean_aggregation/pp_liteseg_rancrops_pad_after_inference.py b/rancrop_model_variants/softmax_plus_mean_aggregation/pp_liteseg_rancrops_pad_after_inference.py
index f8bc0d0..5122be5 100644
--- a/rancrop_model_variants/softmax_plus_mean_aggregation/pp_liteseg_rancrops_pad_after_inference.py
+++ b/rancrop_model_variants/softmax_plus_mean_aggregation/pp_liteseg_rancrops_pad_after_inference.py
@@ -63,6 +63,7 @@ def __init__(self,
             resize_mode=resize_mode,
             pretrained=pretrained
         )
+        assert random_crops >= 0, 'Number of random crops should be a positive integer'
         self.__random_crops = random_crops
         self.__num_classes = num_classes
 
diff --git a/rancrop_model_variants/softmax_plus_mean_aggregation/pp_liteseg_rancrops_pad_before_inference.py b/rancrop_model_variants/softmax_plus_mean_aggregation/pp_liteseg_rancrops_pad_before_inference.py
index 7d09503..9f4a3d3 100644
--- a/rancrop_model_variants/softmax_plus_mean_aggregation/pp_liteseg_rancrops_pad_before_inference.py
+++ b/rancrop_model_variants/softmax_plus_mean_aggregation/pp_liteseg_rancrops_pad_before_inference.py
@@ -63,6 +63,7 @@ def __init__(self,
             resize_mode=resize_mode,
             pretrained=pretrained
         )
+        assert random_crops >= 0, 'Number of random crops should be a positive integer'
         self.__random_crops = random_crops
         self.__num_classes = num_classes