diff --git a/Common/OfficeFileFormatChecker2.cpp b/Common/OfficeFileFormatChecker2.cpp
index d9c8e41634..0498cb4ea5 100644
--- a/Common/OfficeFileFormatChecker2.cpp
+++ b/Common/OfficeFileFormatChecker2.cpp
@@ -1436,7 +1436,7 @@ bool COfficeFileFormatChecker::isHwpxFile(const std::wstring &fileName)
 	
 	if (19 <= unSize && NULL != strstr((char *)pBuffer, hwpxFormatLine))
 	{
-		nFileType = AVS_OFFICESTUDIO_FILE_DOCUMENT_HWPML;
+		nFileType = AVS_OFFICESTUDIO_FILE_DOCUMENT_HWPX;
 		bResult = true;
 	}