diff --git a/drivers/filesystems/udfs/Include/Sys_spec_lib.cpp b/drivers/filesystems/udfs/Include/Sys_spec_lib.cpp
index 0c21ff93890..540c3db0336 100644
--- a/drivers/filesystems/udfs/Include/Sys_spec_lib.cpp
+++ b/drivers/filesystems/udfs/Include/Sys_spec_lib.cpp
@@ -239,7 +239,7 @@ UDFFileDirInfoToNT(
     UNICODE_STRING DosName;
     PEXTENDED_FILE_ENTRY ExFileEntry;
     USHORT Ident;
-    BOOLEAN ReadSizes;
+    BOOLEAN ReadSizes = FALSE;
     NTSTATUS status;
     PtrUDFNTRequiredFCB NtReqFcb;