diff --git a/volatility/schemas/__init__.py b/volatility/schemas/__init__.py
index 6020cb46e..5dc2c5297 100644
--- a/volatility/schemas/__init__.py
+++ b/volatility/schemas/__init__.py
@@ -7,7 +7,7 @@ from volatility.framework import constants
 
 vollog = logging.getLogger(__name__)
 
-cached_validation_filepath = os.path.join(constants.CACHE_PATH, "valid_idf.cache")
+cached_validation_filepath = os.path.join(constants.CACHE_PATH, "valid_isf.cache")
 
 
 def load_cached_validations():