diff --git a/export/file/imp.go b/export/file/imp.go
index 144f0f4..1236c01 100644
--- a/export/file/imp.go
+++ b/export/file/imp.go
@@ -12,24 +12,24 @@ import (
 )
 
 type ImpFooter struct {
-	Height   byte
 	Width    byte
+	Height   byte
 	NbFrames byte
 }
 
 func Imp(sprites []byte, nbFrames, width, height, mode uint, filename string, export *x.ExportType) error {
-	h := height
+	w := width
 	switch mode {
 	case 0:
-		h /= 2
+		w /= 2
 	case 1:
-		h /= 4
+		w /= 4
 	case 2:
-		h /= 8
+		w /= 8
 	}
 	impHeader := ImpFooter{
-		Height:   byte(h),
-		Width:    byte(width),
+		Width:    byte(w),
+		Height:   byte(height),
 		NbFrames: byte(nbFrames),
 	}
 	output := make([]byte, 0)
@@ -70,7 +70,7 @@ func TileMap(data []byte, filename string, export *x.ExportType) error {
 		Size:        uint16(binary.Size(output)),
 		Size2:       uint16(binary.Size(output)),
 		LogicalSize: uint16(binary.Size(output))}
-	copy(header.Filename[:], export.GetAmsdosFilename(filename, ".IMP"))
+	copy(header.Filename[:], export.GetAmsdosFilename(filename, ".TIL"))
 	header.Checksum = uint16(header.ComputedChecksum16())
 	impPath := filepath.Join(export.OutputPath, export.GetAmsdosFilename(filename, ".TIL"))
 	fw, err := os.Create(impPath)
diff --git a/main.go b/main.go
index cc8629f..0b3974c 100644
--- a/main.go
+++ b/main.go
@@ -114,7 +114,7 @@ var (
 	filloutGif          = flag.Bool("fillout", false, "Fill out the gif frames needed some case with deltapacking")
 	saturationPal       = flag.Int("contrast", 0, "apply contrast on the color of the palette on amstrad plus screen. (max value 100 and only on CPC PLUS).")
 	brightnessPal       = flag.Int("brightness", 0, "apply brightness on the color of the palette on amstrad plus screen. (max value 100 and only on CPC PLUS).")
-	appVersion          = "0.30"
+	appVersion          = "0.31"
 	version             = flag.Bool("version", false, "print martine's version")
 )
 
@@ -584,11 +584,11 @@ func main() {
 							os.Exit(-1)
 						}
 						f.Close()
-						nbFrames++
 						if i >= maxTiles {
 							fmt.Fprintf(os.Stderr, "Maximum of %d tiles accepted, skipping...\n", maxTiles)
 							break
 						}
+						nbFrames++
 					}
 				}
 				// save the file sprites