diff --git a/degesch.c b/degesch.c
index e066edf..579a355 100644
--- a/degesch.c
+++ b/degesch.c
@@ -1231,7 +1231,7 @@ config_validate_nonnegative
 	return false;
 }
 
-struct config_schema g_config_server[] =
+static struct config_schema g_config_server[] =
 {
 	{ .name      = "nickname",
 	  .comment   = "IRC nickname",
@@ -1305,7 +1305,7 @@ struct config_schema g_config_server[] =
 	{}
 };
 
-struct config_schema g_config_behaviour[] =
+static struct config_schema g_config_behaviour[] =
 {
 	{ .name      = "isolate_buffers",
 	  .comment   = "Don't leak messages from the server and global buffers",
@@ -1314,7 +1314,7 @@ struct config_schema g_config_behaviour[] =
 	{}
 };
 
-struct config_schema g_config_attributes[] =
+static struct config_schema g_config_attributes[] =
 {
 #define XX(x, y, z) { .name = y, .comment = z, .type = CONFIG_ITEM_STRING },
 	ATTR_TABLE (XX)