diff --git a/server/core/config.c b/server/core/config.c
index 2fe378dc2..b68c6733d 100644
--- a/server/core/config.c
+++ b/server/core/config.c
@@ -146,7 +146,7 @@ char* config_clean_string_list(char* str)
         int re_err;
         size_t err_offset;
 
-        if ((re = pcre2_compile((PCRE2_SPTR) "[[:space:],]*([^,]+)\\b[[:space:],]*", PCRE2_ZERO_TERMINATED, 0,
+        if ((re = pcre2_compile((PCRE2_SPTR) "[[:space:],]*([^,]*[^[:space:],])[[:space:],]*", PCRE2_ZERO_TERMINATED, 0,
                                 &re_err, &err_offset, NULL)) == NULL ||
             (data = pcre2_match_data_create_from_pattern(re, NULL)) == NULL)
         {