diff --git a/fragment.go b/fragment.go
index 038616f..647853c 100644
--- a/fragment.go
+++ b/fragment.go
@@ -18,7 +18,7 @@ type fragmentEntry struct {
 //GetFragmentDataFromInode returns the fragment data for a given inode.
 //If the inode does not have a fragment, harmlessly returns an empty slice without an error.
 func (r *Reader) getFragmentDataFromInode(in *inode.Inode) ([]byte, error) {
-	var size uint32
+	var size uint64
 	var fragIndex uint32
 	var fragOffset uint32
 	if in.Type == inode.FileType {
@@ -27,9 +27,9 @@ func (r *Reader) getFragmentDataFromInode(in *inode.Inode) ([]byte, error) {
 			return make([]byte, 0), nil
 		}
 		if bf.BlockStart == 0 {
-			size = bf.Size
+			size = uint64(bf.Size)
 		} else {
-			size = bf.BlockSizes[len(bf.BlockSizes)-1]
+			size = uint64(bf.BlockSizes[len(bf.BlockSizes)-1])
 		}
 		fragIndex = bf.FragmentIndex
 		fragOffset = bf.FragmentOffset
@@ -41,7 +41,7 @@ func (r *Reader) getFragmentDataFromInode(in *inode.Inode) ([]byte, error) {
 		if bf.BlockStart == 0 {
 			size = bf.Size
 		} else {
-			size = bf.BlockSizes[len(bf.BlockSizes)-1]
+			size = uint64(bf.BlockSizes[len(bf.BlockSizes)-1])
 		}
 		fragIndex = bf.FragmentIndex
 		fragOffset = bf.FragmentOffset
diff --git a/internal/inode/inodetypes.go b/internal/inode/inodetypes.go
index 4239fa1..0d00582 100644
--- a/internal/inode/inodetypes.go
+++ b/internal/inode/inodetypes.go
@@ -140,8 +140,8 @@ func NewFile(rdr io.Reader, blockSize uint32) (File, error) {
 
 //ExtFileInit is the information that can be directly decoded
 type ExtFileInit struct {
-	BlockStart     uint32
-	Size           uint32
+	BlockStart     uint64
+	Size           uint64
 	Sparse         uint64
 	HardLinks      uint32
 	FragmentIndex  uint32
@@ -164,8 +164,8 @@ func NewExtendedFile(rdr io.Reader, blockSize uint32) (ExtFile, error) {
 		return inode, err
 	}
 	inode.Fragmented = inode.FragmentIndex != 0xFFFFFFFF
-	blocks := inode.Size / blockSize
-	if inode.Size%blockSize > 0 {
+	blocks := inode.Size / uint64(blockSize)
+	if inode.Size%uint64(blockSize) > 0 {
 		blocks++
 	}
 	inode.BlockSizes = make([]uint32, blocks, blocks)
diff --git a/reader_test.go b/reader_test.go
index 5b4d6ff..30aacdb 100644
--- a/reader_test.go
+++ b/reader_test.go
@@ -15,7 +15,7 @@ import (
 
 const (
 	downloadURL  = "https://github.com/srevinsaju/Firefox-Appimage/releases/download/firefox-v84.0.r20201221152838/firefox-84.0.r20201221152838-x86_64.AppImage"
-	appImageName = "firefox-84.0.r20201221152838-x86_64.AppImage"
+	appImageName = "Ultimaker_Cura-4.8.0.AppImage"
 	squashfsName = "balenaEtcher-1.5.113-x64.AppImage.sfs"
 )
 
@@ -71,20 +71,17 @@ func TestAppImage(t *testing.T) {
 	stat, _ := aiFil.Stat()
 	os.RemoveAll(wd + "/testing/firefox")
 	ai := goappimage.NewAppImage(wd + "/testing/" + appImageName)
-	start := time.Now()
 	rdr, err := NewSquashfsReader(io.NewSectionReader(aiFil, ai.Offset, stat.Size()-ai.Offset))
 	if err != nil {
 		t.Fatal(err)
 	}
-	rt := rdr.GetFileAtPath("/")
-	fils, err := rt.GetChildrenRecursively()
-	if err != nil {
-		t.Fatal(err)
+	desktop := rdr.GetFileAtPath("*.desktop")
+	if desktop == nil {
+		t.Fatal("Problema!")
 	}
-	for _, fil := range fils {
-		fmt.Println(fil.Path())
-	}
-	fmt.Println(time.Since(start))
+	os.Remove(wd + "/testing/cura.desktop")
+	deskFil, _ := os.Create(wd + "/testing/cura.desktop")
+	io.Copy(deskFil, desktop.Sys().(io.Reader))
 	t.Fatal("No problemo!")
 }