diff --git a/aimodel/src/lib/ai/RainfallWaterContraster.py b/aimodel/src/lib/ai/RainfallWaterContraster.py
index e774610..b177e95 100644
--- a/aimodel/src/lib/ai/RainfallWaterContraster.py
+++ b/aimodel/src/lib/ai/RainfallWaterContraster.py
@@ -53,7 +53,7 @@ class RainfallWaterContraster(object):
 	@staticmethod
 	def from_checkpoint(filepath_checkpoint, filepath_hyperparams=None):
 		if not filepath_checkpoint:
-			filepath_checkpoint = find_paramsjson(filepath_checkpoint)
+			filepath_hyperparams = find_paramsjson(filepath_checkpoint)
 		hyperparams = json.loads(readfile(filepath_hyperparams))
 		return RainfallWaterContraster(filepath_checkpoint=filepath_checkpoint, **hyperparams)