diff --git a/devices/geiger/gqgmc.go b/devices/geiger/gqgmc.go
index 6875b36b525c33ec674b79e8312032038c6464f4..c16f7d8728a2ddb0e01a562186a0ed5b0e73524a 100644
--- a/devices/geiger/gqgmc.go
+++ b/devices/geiger/gqgmc.go
@@ -452,7 +452,8 @@ func (gc *GQGMCCounter) recv(length int) ([]byte, error) {
 	}
 	if n != length {
 		for i := 0; i < 20; i++ {
-			_, err = gc.port.Read(buf[len(buf):])
+			fmt.Printf("%d ", n)
+			n, err = gc.port.Read(buf[len(buf):])
 			if err != nil {
 				return nil, err
 			}
@@ -460,9 +461,11 @@ func (gc *GQGMCCounter) recv(length int) ([]byte, error) {
 				break
 			}
 		}
+		fmt.Printf("%d\n", n)
 	}
 	if n != length {
-		return nil, fmt.Errorf("Short read (got: %d, wanted: %d)", uint32(n), length)
+		fmt.Printf("Short read: %+v\n", buf)
+		return nil, fmt.Errorf("Short read (got: %d, wanted: %d)", n, length)
 	}
 	return buf, nil
 }