diff --git a/src/switch_core.c b/src/switch_core.c
index 4991ae0880..2e6c18712b 100644
--- a/src/switch_core.c
+++ b/src/switch_core.c
@@ -104,11 +104,11 @@ static void check_ip(void) {
 		switch_set_string(main_ip4, guess_ip4);
 	} else {
 		if (!(ok4 = !strcmp(main_ip4, guess_ip4))) {
-
+			struct in_addr in = { mask };
 			switch_set_string(old_ip4, main_ip4);
 			switch_set_string(main_ip4, guess_ip4);
 			switch_core_set_variable("local_ip_v4", guess_ip4);
-			switch_core_set_variable("local_mask_v4", inet_ntoa(mask));
+			switch_core_set_variable("local_mask_v4", inet_ntoa(in));
 		}
 	}