diff --git a/include/corosync/cfg.h b/include/corosync/cfg.h
index bb739d7e..7c201bbb 100644
--- a/include/corosync/cfg.h
+++ b/include/corosync/cfg.h
@@ -178,13 +178,13 @@ corosync_cfg_ring_reenable (
 cs_error_t
 corosync_cfg_service_load (
 	corosync_cfg_handle_t cfg_handle,
-	char *service_name,
+	const char *service_name,
 	unsigned int service_ver);
 
 cs_error_t
 corosync_cfg_service_unload (
 	corosync_cfg_handle_t cfg_handle,
-	char *service_name,
+	const char *service_name,
 	unsigned int service_ver);
 
 cs_error_t
diff --git a/lib/cfg.c b/lib/cfg.c
index e90832f7..8ff23680 100644
--- a/lib/cfg.c
+++ b/lib/cfg.c
@@ -428,7 +428,7 @@ corosync_cfg_ring_reenable (
 cs_error_t
 corosync_cfg_service_load (
 	corosync_cfg_handle_t cfg_handle,
-	char *service_name,
+	const char *service_name,
 	unsigned int service_ver)
 {
 	struct cfg_instance *cfg_instance;
@@ -470,7 +470,7 @@ corosync_cfg_service_load (
 cs_error_t
 corosync_cfg_service_unload (
 	corosync_cfg_handle_t cfg_handle,
-	char *service_name,
+	const char *service_name,
 	unsigned int service_ver)
 {
 	struct cfg_instance *cfg_instance;