1 files changed, 1 insertions, 1 deletions
diff --git a/src/thirdparty/unrar/archive.hpp b/src/thirdparty/unrar/archive.hpp
index 522709608..6d1515697 100644
--- a/src/thirdparty/unrar/archive.hpp
+++ b/src/thirdparty/unrar/archive.hpp
@@ -61,7 +61,7 @@ class Archive:public File
   public:
     Archive(RAROptions *InitCmd=NULL);
     ~Archive();
-    RARFORMAT IsSignature(const byte *D,size_t Size);
+    static RARFORMAT IsSignature(const byte *D,size_t Size);
     bool IsArchive(bool EnableBroken);
     size_t SearchBlock(HEADER_TYPE HeaderType);
     size_t SearchSubBlock(const wchar *Type);