1 files changed, 5 insertions, 3 deletions

diff --git a/iphone.c b/iphone.c
index 5cceb95..6be85e6 100644
--- a/iphone.c
+++ b/iphone.c
@@ -427,9 +427,11 @@ iphone_error_t iphone_free_device(iphone_device_t device)
                 return IPHONE_E_INVALID_ARG;
         iphone_error_t ret = IPHONE_E_UNKNOWN_ERROR;
 
-        do {
-            bytes = usb_bulk_read(device->device, BULKIN, buf, 512, 800);
-        } while (bytes > 0);
+        if (device->device) {
+                do {
+                        bytes = usb_bulk_read(device->device, BULKIN, buf, 512, 800);
+                } while (bytes > 0);
+        }
 
         if (device->buffer) {
                 free(device->buffer);