diff --git a/termite.cc b/termite.cc
index b9e0d38..ec20694 100644
--- a/termite.cc
+++ b/termite.cc
@@ -910,7 +910,8 @@ static bool get_config_color(GKeyFile *config, const char *section, const char *
     return success;
 }
 
-maybe<cairo_pattern_t *> get_config_cairo_color(GKeyFile *config, const char *group, const char *key) {
+static maybe<cairo_pattern_t *>
+get_config_cairo_color(GKeyFile *config, const char *group, const char *key) {
     maybe<cairo_pattern_t *> ret = {};
 
     if (auto s = get_config_string(config, group, key)) {