diff --git a/common/lc_library.cpp b/common/lc_library.cpp
index e2f5ff2b..1feb7a6c 100644
--- a/common/lc_library.cpp
+++ b/common/lc_library.cpp
@@ -19,6 +19,7 @@ lcPiecesLibrary::lcPiecesLibrary()
 	mNumOfficialPieces = 0;
 	mZipFile = NULL;
 	mCacheFile = NULL;
+	mCacheFileName[0] = 0;
 	mSaveCache = false;
 }
 
@@ -521,6 +522,9 @@ bool lcPiecesLibrary::OpenCache()
 {
 	struct stat CacheStat;
 
+	if (!mCacheFileName[0])
+		return false;
+
 	if (stat(mCacheFileName, &CacheStat) != 0 || mCacheFileModifiedTime != (lcuint64)CacheStat.st_mtime)
 		return false;