diff --git a/packages/addons/addon-depends/network-tools-depends/iftop/patches/iftop-Fix-building-with-gcc10.patch b/packages/addons/addon-depends/network-tools-depends/iftop/patches/iftop-Fix-building-with-gcc10.patch
new file mode 100644
index 0000000000..0f9c895101
--- /dev/null
+++ b/packages/addons/addon-depends/network-tools-depends/iftop/patches/iftop-Fix-building-with-gcc10.patch
@@ -0,0 +1,54 @@
+From d9402e29486f60ea4a9b8da530c60e6c8404127b Mon Sep 17 00:00:00 2001
+From: Jernej Skrabec <jernej.skrabec@siol.net>
+Date: Mon, 22 Jun 2020 20:18:59 +0200
+Subject: [PATCH] Fix building with gcc10
+
+---
+ ui_common.c |  6 ++++++
+ ui_common.h | 12 +++++++-----
+ 2 files changed, 13 insertions(+), 5 deletions(-)
+
+diff --git a/ui_common.c b/ui_common.c
+index dcf66466fda4..b1027ec16da7 100644
+--- a/ui_common.c
++++ b/ui_common.c
+@@ -17,6 +17,12 @@
+ 
+ #include "ui_common.h"
+ 
++sorted_list_type screen_list;
++host_pair_line totals;
++int peaksent, peakrecv, peaktotal;
++hash_type* screen_hash;
++hash_type* service_hash;
++
+ /* 2, 10 and 40 seconds */
+ int history_divs[HISTORY_DIVISIONS] = {1, 5, 20};
+ 
+diff --git a/ui_common.h b/ui_common.h
+index 63ae5bb69886..1403d11c310c 100644
+--- a/ui_common.h
++++ b/ui_common.h
+@@ -33,12 +33,14 @@ typedef struct host_pair_line_tag {
+ 
+ extern options_t options;
+ 
+-sorted_list_type screen_list;
+-host_pair_line totals;
+-int peaksent, peakrecv, peaktotal;
++extern sorted_list_type screen_list;
++extern host_pair_line totals;
++extern int peaksent;
++extern int peakrecv;
++extern int peaktotal;
+ extern history_type history_totals;
+-hash_type* screen_hash;
+-hash_type* service_hash;
++extern hash_type* screen_hash;
++extern hash_type* service_hash;
+ 
+ void analyse_data(void);
+ void screen_list_init(void);
+-- 
+2.27.0
+