diff --git a/packages/pastojs/src/pas2jsfilecache.pp b/packages/pastojs/src/pas2jsfilecache.pp
index c4bd3f78b5..a10ae128bc 100644
--- a/packages/pastojs/src/pas2jsfilecache.pp
+++ b/packages/pastojs/src/pas2jsfilecache.pp
@@ -1887,6 +1887,7 @@ function TPas2jsFilesCache.FindIncludeFileName(const aFilename, SrcDir,
       i: Integer;
       CurFile: String;
     begin
+      Result:=false;
       Dir:=IncludeTrailingPathDelimiter(Dir);
       for i:=0 to length(SearchedDir)-1 do
         if SearchedDir[i]=Dir then exit;