diff --git a/lib/utils/FileCache.js b/lib/utils/FileCache.js
index 8ec45bb4bc..297c3d7ded 100644
--- a/lib/utils/FileCache.js
+++ b/lib/utils/FileCache.js
@@ -23,6 +23,11 @@ class FileCache {
 		cwd = process.cwd(),
 		hashOfConfig = DEFAULT_HASH,
 	) {
+		if (![DEFAULT_CACHE_STRATEGY, CACHE_STRATEGY_CONTENT].includes(cacheStrategy)) {
+			throw new Error(
+				`"${cacheStrategy}" cache strategy is unsupported. Specify either "${DEFAULT_CACHE_STRATEGY}" or "${CACHE_STRATEGY_CONTENT}"`,
+			);
+		}
 		const cacheFile = path.resolve(getCacheFile(cacheLocation, cwd));
 		const useCheckSum = cacheStrategy !== DEFAULT_CACHE_STRATEGY;