diff --git a/src/shared/serialize.c b/src/shared/serialize.c
index be73cc7098..2f5802ee66 100644
--- a/src/shared/serialize.c
+++ b/src/shared/serialize.c
@@ -321,6 +321,14 @@ int serialize_image_policy(FILE *f, const char *key, const ImagePolicy *p) {
         return 1;
 }
 
+int serialize_bool(FILE *f, const char *key, bool b) {
+        return serialize_item(f, key, yes_no(b));
+}
+
+int serialize_bool_elide(FILE *f, const char *key, bool b) {
+        return b ? serialize_item(f, key, yes_no(b)) : 0;
+}
+
 int deserialize_read_line(FILE *f, char **ret) {
         _cleanup_free_ char *line = NULL;
         int r;
diff --git a/src/shared/serialize.h b/src/shared/serialize.h
index b573e6cc15..e9fe3c276c 100644
--- a/src/shared/serialize.h
+++ b/src/shared/serialize.h
@@ -29,13 +29,8 @@ int serialize_pidref(FILE *f, FDSet *fds, const char *key, PidRef *pidref);
 int serialize_ratelimit(FILE *f, const char *key, const RateLimit *rl);
 int serialize_string_set(FILE *f, const char *key, const Set *s);
 int serialize_image_policy(FILE *f, const char *key, const ImagePolicy *p);
-
-static inline int serialize_bool(FILE *f, const char *key, bool b) {
-        return serialize_item(f, key, yes_no(b));
-}
-static inline int serialize_bool_elide(FILE *f, const char *key, bool b) {
-        return b ? serialize_item(f, key, yes_no(b)) : 0;
-}
+int serialize_bool(FILE *f, const char *key, bool b);
+int serialize_bool_elide(FILE *f, const char *key, bool b);
 
 static inline int serialize_item_tristate(FILE *f, const char *key, int value) {
         return value >= 0 ? serialize_item_format(f, key, "%i", value) : 0;