diff -r 9a6551eba09c -r c593fc9f5438 libpurple/protocols/gg/lib/libgadu.c
--- a/libpurple/protocols/gg/lib/libgadu.c	Thu Mar 23 21:01:15 2017 +0300
+++ b/libpurple/protocols/gg/lib/libgadu.c	Fri Mar 24 02:23:46 2017 +0300
@@ -991,7 +991,7 @@
 	} else
 		sess->protocol_version = p->protocol_version;
 
-	if (p->client_version && strcmp(p->client_version, "-") != 0)
+	if (p->client_version && !purple_strequal(p->client_version, "-"))
 		sess->client_version = strdup(p->client_version);
 	sess->last_sysmsg = p->last_sysmsg;
 	sess->image_size = p->image_size;