diff --git a/include/action.h b/include/action.h
index f11e4c11..a76aecf5 100644
--- a/include/action.h
+++ b/include/action.h
@@ -24,7 +24,7 @@ bool action_is_valid(struct action *action);
 
 void action_arg_add_str(struct action *action, const char *key, const char *value);
 
-void action_arg_from_xml_node(struct action *action, char *nodename, char *content);
+void action_arg_from_xml_node(struct action *action, const char *nodename, const char *content);
 
 bool actions_contain_toggle_keybinds(struct wl_list *action_list);
 
diff --git a/src/action.c b/src/action.c
index 35a29e7f..c04e1c54 100644
--- a/src/action.c
+++ b/src/action.c
@@ -159,7 +159,7 @@ action_arg_add_int(struct action *action, const char *key, int value)
 }
 
 void
-action_arg_from_xml_node(struct action *action, char *nodename, char *content)
+action_arg_from_xml_node(struct action *action, const char *nodename, const char *content)
 {
 	assert(action);
 
diff --git a/src/config/rcxml.c b/src/config/rcxml.c
index f0af0b51..42f89442 100644
--- a/src/config/rcxml.c
+++ b/src/config/rcxml.c
@@ -847,7 +847,8 @@ load_default_key_bindings(void)
 		wl_list_append(&k->actions, &action->link);
 
 		if (key_combos[i].attribute && key_combos[i].value) {
-			action_arg_add_str(action, key_combos[i].attribute, key_combos[i].value);
+			action_arg_from_xml_node(action,
+				key_combos[i].attribute, key_combos[i].value);
 		}
 	}
 }
@@ -956,7 +957,8 @@ load_default_mouse_bindings(void)
 		 * slightly more sophisticated approach will be needed.
 		 */
 		if (current->attribute && current->value) {
-			action_arg_add_str(action, current->attribute, current->value);
+			action_arg_from_xml_node(action,
+				current->attribute, current->value);
 		}
 	}
 	wlr_log(WLR_DEBUG, "Loaded %u merged mousebinds", count);