diff --git a/include/sway/config.h b/include/sway/config.h
index a0a98fb6..01c99cb4 100644
--- a/include/sway/config.h
+++ b/include/sway/config.h
@@ -577,7 +577,8 @@ void merge_input_config(struct input_config *dst, struct input_config *src);
 
 struct input_config *store_input_config(struct input_config *ic);
 
-struct xkb_rule_names input_config_get_rule_names(struct input_config *ic);
+void input_config_fill_rule_names(struct input_config *ic,
+		struct xkb_rule_names *rules);
 
 void free_input_config(struct input_config *ic);
 
diff --git a/sway/config.c b/sway/config.c
index fed01eb4..d4a4a2f7 100644
--- a/sway/config.c
+++ b/sway/config.c
@@ -337,7 +337,7 @@ static void config_defaults(struct sway_config *config) {
 	if (!(config->ipc_policies = create_list())) goto cleanup;
 
 	// The keysym to keycode translation
-	struct xkb_rule_names rules = {};
+	struct xkb_rule_names rules = {0};
 	config->keysym_translation_state =
 		keysym_translation_state_create(rules);
 
@@ -989,7 +989,8 @@ static void translate_binding_list(list_t *bindings, list_t *bindsyms,
 void translate_keysyms(struct input_config *input_config) {
 	keysym_translation_state_destroy(config->keysym_translation_state);
 
-	struct xkb_rule_names rules = input_config_get_rule_names(input_config);
+	struct xkb_rule_names rules = {0};
+	input_config_fill_rule_names(input_config, &rules);
 	config->keysym_translation_state =
 		keysym_translation_state_create(rules);
 
diff --git a/sway/config/input.c b/sway/config/input.c
index 595aa029..9c533e71 100644
--- a/sway/config/input.c
+++ b/sway/config/input.c
@@ -212,16 +212,13 @@ struct input_config *store_input_config(struct input_config *ic) {
 	return ic;
 }
 
-struct xkb_rule_names input_config_get_rule_names(struct input_config *ic) {
-	struct xkb_rule_names rules = {
-		.layout = ic->xkb_layout,
-		.model = ic->xkb_model,
-		.options = ic->xkb_options,
-		.rules = ic->xkb_rules,
-		.variant = ic->xkb_variant,
-	};
-
-	return rules;
+void input_config_fill_rule_names(struct input_config *ic,
+		struct xkb_rule_names *rules) {
+	rules->layout = ic->xkb_layout;
+	rules->model = ic->xkb_model;
+	rules->options = ic->xkb_options;
+	rules->rules = ic->xkb_rules;
+	rules->variant = ic->xkb_variant;
 }
 
 void free_input_config(struct input_config *ic) {
diff --git a/sway/input/keyboard.c b/sway/input/keyboard.c
index 04b8b0ce..396cc865 100644
--- a/sway/input/keyboard.c
+++ b/sway/input/keyboard.c
@@ -482,11 +482,9 @@ void sway_keyboard_configure(struct sway_keyboard *keyboard) {
 	struct wlr_input_device *wlr_device =
 		keyboard->seat_device->input_device->wlr_device;
 
-	struct xkb_rule_names rules;
+	struct xkb_rule_names rules = {0};
 	if (input_config) {
-		rules = input_config_get_rule_names(input_config);
-	} else {
-		memset(&rules, 0, sizeof(rules));
+		input_config_fill_rule_names(input_config, &rules);
 	}
 
 	if (!rules.layout) {