diff --git a/Docs/src/history.but b/Docs/src/history.but
index 031fc99d..67ec5fc4 100644
--- a/Docs/src/history.but
+++ b/Docs/src/history.but
@@ -20,6 +20,8 @@ Unicode is now the default.
 
 \b Fixed Unicode compiler crash (\W{http://sf.net/p/nsis/bugs/1254}{bug #1254}, \W{http://sf.net/p/nsis/patches/300}{patch #300})
 
+\b Fixed !addplugindir relative path bug (\W{http://sf.net/p/nsis/bugs/1264}{bug #1264}
+
 \S2{} Translations
 
 \b Updated Corsican\#{(forum)} and Japanese (maboroshin PR\#{github.com/maboroshin})
diff --git a/Source/Plugins.cpp b/Source/Plugins.cpp
index a176ae06..6f1c11c7 100644
--- a/Source/Plugins.cpp
+++ b/Source/Plugins.cpp
@@ -108,7 +108,7 @@ void Plugins::AddPluginsDir(const tstring &path, bool pe64, bool displayInfo)
     if (!dir_reader::matches(*files_itr, _T("*.dll")))
       continue;
 
-    const tstring plugin = path + PLATFORM_PATH_SEPARATOR_C + *files_itr;
+    const tstring plugin = get_full_path(path + PLATFORM_PATH_SEPARATOR_C + *files_itr);
     GetExports(plugin, pe64, displayInfo);
   }
 }