diff --git a/src/partition/repart.c b/src/partition/repart.c
index db746dc740..f3c09b6f4f 100644
--- a/src/partition/repart.c
+++ b/src/partition/repart.c
@@ -1788,9 +1788,10 @@ static int config_parse_subvolumes(
                 if (r == 0)
                         return 0;
 
-                r = extract_many_words((const char **) &word, ":", EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS, &path, &f);
+                const char *q = word;
+                r = extract_many_words(&q, ":", EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS, &path, &f);
                 if (r < 0) {
-                        log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", word);
+                        log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", q);
                         continue;
                 }