diff --git a/include/libimobiledevice/file_relay.h b/include/libimobiledevice/file_relay.h
index f9318bd..95aba6b 100644
--- a/include/libimobiledevice/file_relay.h
+++ b/include/libimobiledevice/file_relay.h
@@ -40,6 +40,7 @@
 #define FILE_RELAY_E_MUX_ERROR             -3
 #define FILE_RELAY_E_INVALID_SOURCE        -4
 #define FILE_RELAY_E_STAGING_EMPTY         -5
+#define FILE_RELAY_E_PERMISSION_DENIED     -6
 
 #define FILE_RELAY_E_UNKNOWN_ERROR       -256
 /*@}*/
diff --git a/src/file_relay.c b/src/file_relay.c
index 3d1eb12..9508c2a 100644
--- a/src/file_relay.c
+++ b/src/file_relay.c
@@ -110,6 +110,9 @@
 			} else if (!strcmp(errmsg, "StagingEmpty")) {
 				debug_info("ERROR: StagingEmpty - No data available!");
 				err = FILE_RELAY_E_STAGING_EMPTY;
+			} else if (!strcmp(errmsg, "PermissionDenied")) {
+				debug_info("ERROR: Permission denied.");
+				err = FILE_RELAY_E_PERMISSION_DENIED;
 			} else {
 				debug_info("ERROR: Unknown error '%s'", errmsg);
 			}