diff --git a/contrib/slapd-modules/passwd/argon2/pw-argon2.c b/contrib/slapd-modules/passwd/argon2/pw-argon2.c
index 0ffb6cdb08df2734468eaeb0c49ede4b789fb08c..4bb8f217ea77bb60d1992e7ab1b880bcf596a827 100644
--- a/contrib/slapd-modules/passwd/argon2/pw-argon2.c
+++ b/contrib/slapd-modules/passwd/argon2/pw-argon2.c
@@ -42,7 +42,7 @@
  * Or libsodium moderate settings
  */
 #define SLAPD_ARGON2_ITERATIONS crypto_pwhash_OPSLIMIT_INTERACTIVE
-#define SLAPD_ARGON2_MEMORY crypto_pwhash_MEMLIMIT_INTERACTIVE
+#define SLAPD_ARGON2_MEMORY (crypto_pwhash_MEMLIMIT_INTERACTIVE / 1024)
 #define SLAPD_ARGON2_PARALLELISM 1
 #define SLAPD_ARGON2_SALT_LENGTH crypto_pwhash_SALTBYTES
 #define SLAPD_ARGON2_HASH_LENGTH 32