diff --git a/src/util/conf.c b/src/util/conf.c
index 30f51e2..c1a6066 100644
--- a/src/util/conf.c
+++ b/src/util/conf.c
@@ -129,7 +129,7 @@ int conf_procval(struct conf_entry const* opt, char const* restrict val) {
 }
 
 /* utility function for conf_getpat to concatenate 3 strings, where we already know the size */
-atrb_nonnull(1, 3) static inline char* conf_getpat_concat(char const* restrict s1, char const* restrict s2, char const* restrict s3, size_t s1len, size_t s2len, size_t s3len) {
+atrb_nonnull(1, 3) static char* conf_getpat_concat(char const* restrict s1, char const* restrict s2, char const* restrict s3, size_t s1len, size_t s2len, size_t s3len) {
 	assert(s2 || (!s2 && !s2len)); // ensuring the programmer passes both s2 and s2len as 0, if they intend to
 	char *buf, *ptr;