diff --git a/dlls/cabinet/fdi.c b/dlls/cabinet/fdi.c
index fdff0bf0f02..758133e2355 100644
--- a/dlls/cabinet/fdi.c
+++ b/dlls/cabinet/fdi.c
@@ -2640,6 +2640,7 @@ BOOL __cdecl FDICopy(
       fdin.date = file->date;
       fdin.time = file->time;
       fdin.attribs = file->attribs;
+      fdin.iFolder = file->index;
       if ((filehf = ((*pfnfdin)(fdintCOPY_FILE, &fdin))) == -1) {
         set_error( fdi, FDIERROR_USER_ABORT, 0 );
         filehf = 0;
@@ -2765,6 +2766,7 @@ BOOL __cdecl FDICopy(
       fdin.date = file->date;
       fdin.time = file->time;
       fdin.attribs = file->attribs; /* FIXME: filter _A_EXEC? */
+      fdin.iFolder = file->index;
       ((*pfnfdin)(fdintCLOSE_FILE_INFO, &fdin));
       filehf = 0;
 
diff --git a/dlls/cabinet/tests/fdi.c b/dlls/cabinet/tests/fdi.c
index b5bec38de11..ba622f6b41b 100644
--- a/dlls/cabinet/tests/fdi.c
+++ b/dlls/cabinet/tests/fdi.c
@@ -116,7 +116,7 @@ static const struct
 {
     { {'M','S','C','F'}, 0, 0x59, 0, sizeof(struct CFHEADER) + sizeof(struct CFFOLDER), 0, 3,1, 1, 1, 0, 0x1225, 0x2013 },
     { sizeof(struct CFHEADER) + sizeof(struct CFFOLDER) + sizeof(struct CFFILE) + sizeof("file.dat"), 1, tcompTYPE_NONE },
-    { sizeof("Hello World!")-1, 0, 0, 0x1225, 0x2013, 0xa114 },
+    { sizeof("Hello World!")-1, 0, 0x1234, 0x1225, 0x2013, 0xa114 },
     { 'f','i','l','e','.','d','a','t',0 },
     { 0, sizeof("Hello World!")-1, sizeof("Hello World!")-1 },
     { 'H','e','l','l','o',' ','W','o','r','l','d','!' }
@@ -841,7 +841,7 @@ static INT_PTR CDECL fdi_mem_notify(FDINOTIFICATIONTYPE fdint, FDINOTIFICATION *
         ok(info->date == 0x1225, "expected 0x1225, got %#x\n", info->date);
         ok(info->time == 0x2013, "expected 0x2013, got %#x\n", info->time);
         ok(info->attribs == 0xa114, "expected 0xa114, got %#x\n", info->attribs);
-        ok(info->iFolder == 0, "expected 0, got %#x\n", info->iFolder);
+        ok(info->iFolder == 0x1234, "expected 0x1234, got %#x\n", info->iFolder);
         return 1;
 
     case fdintCOPY_FILE:
@@ -850,6 +850,7 @@ static INT_PTR CDECL fdi_mem_notify(FDINOTIFICATIONTYPE fdint, FDINOTIFICATION *
 
         ok(info->cb == 12, "expected 12, got %u\n", info->cb);
         ok(!strcmp(info->psz1, expected), "expected %s, got %s\n", expected, info->psz1);
+        ok(info->iFolder == 0x1234, "expected 0x1234, got %#x\n", info->iFolder);
         return 0x12345678; /* call write() callback */
     }