diff -r f7e6b1b38a04 -r 2b86501d13fe pidgin/gtkconv.c
--- a/pidgin/gtkconv.c	Tue Mar 01 03:27:08 2022 -0600
+++ b/pidgin/gtkconv.c	Thu Mar 03 23:59:46 2022 -0600
@@ -1099,7 +1099,7 @@
 		return;
 
 	gtkconv = PIDGIN_CONVERSATION(conv);
-	new_topic = g_strdup(gtk_entry_get_text(GTK_ENTRY(gtkconv->topic_text)));
+	new_topic = g_strdup(gtk_editable_get_text(GTK_EDITABLE(gtkconv->topic_text)));
 	current_topic = purple_chat_conversation_get_topic(PURPLE_CHAT_CONVERSATION(conv));
 
 	if(current_topic && !g_utf8_collate(new_topic, current_topic)){
@@ -1107,10 +1107,11 @@
 		return;
 	}
 
-	if (current_topic)
-		gtk_entry_set_text(GTK_ENTRY(gtkconv->topic_text), current_topic);
-	else
-		gtk_entry_set_text(GTK_ENTRY(gtkconv->topic_text), "");
+	if (current_topic) {
+		gtk_editable_set_text(GTK_EDITABLE(gtkconv->topic_text), current_topic);
+	} else {
+		gtk_editable_set_text(GTK_EDITABLE(gtkconv->topic_text), "");
+	}
 
 	purple_protocol_chat_set_topic(PURPLE_PROTOCOL_CHAT(protocol), gc, purple_chat_conversation_get_id(PURPLE_CHAT_CONVERSATION(conv)),
 			new_topic);
@@ -2046,7 +2047,7 @@
 		{
 			topic = purple_chat_conversation_get_topic(PURPLE_CHAT_CONVERSATION(conv));
 
-			gtk_entry_set_text(GTK_ENTRY(gtkconv->topic_text), topic ? topic : "");
+			gtk_editable_set_text(GTK_EDITABLE(gtkconv->topic_text), topic ? topic : "");
 			gtk_widget_set_tooltip_text(gtkconv->topic_text,
 			                            topic ? topic : "");
 		}
@@ -2078,7 +2079,7 @@
 			}
 		} else if (PURPLE_IS_CHAT_CONVERSATION(conv)) {
 			const char *topic = gtkconv->topic_text
-				? gtk_entry_get_text(GTK_ENTRY(gtkconv->topic_text))
+				? gtk_editable_get_text(GTK_EDITABLE(gtkconv->topic_text))
 				: NULL;
 			const char *title = purple_conversation_get_title(conv);
 			const char *name = purple_conversation_get_name(conv);