diff --git a/nslcd/attmap.c b/nslcd/attmap.c
index d024a59..498d907 100644
--- a/nslcd/attmap.c
+++ b/nslcd/attmap.c
@@ -276,7 +276,7 @@ const char *attmap_get_value(MYLDAP_ENTRY *entry, const char *attr,
       return NULL;
     if (strlen(values[0]) >= buflen)
     {
-      log_log(LOG_ERR, "attmap_get_value(): buffer too small (%d required)",
+      log_log(LOG_ERR, "attmap_get_value(): buffer too small (%zu required)",
               strlen(values[0]));
       return NULL;
     }
diff --git a/nslcd/cfg.c b/nslcd/cfg.c
index 4928244..ce38d22 100644
--- a/nslcd/cfg.c
+++ b/nslcd/cfg.c
@@ -457,7 +457,7 @@ static void add_uris_from_dns(const char *filename, int lnr,
       hostlist[strlen(hostlist) - 4] = '\0';
       if (mysnprintf(buf, sizeof(buf), "ldaps://%s", hostlist))
       {
-        log_log(LOG_ERR, "add_uris_from_dns(): buf buffer too small (%d required)",
+        log_log(LOG_ERR, "add_uris_from_dns(): buf buffer too small (%zu required)",
                 strlen(hostlist) + 8);
         exit(EXIT_FAILURE);
       }
@@ -469,7 +469,7 @@ static void add_uris_from_dns(const char *filename, int lnr,
         hostlist[strlen(hostlist) - 4] = '\0';
       if (mysnprintf(buf, sizeof(buf), "ldap://%s", hostlist))
       {
-        log_log(LOG_ERR, "add_uris_from_dns(): buf buffer too small (%d required)",
+        log_log(LOG_ERR, "add_uris_from_dns(): buf buffer too small (%zu required)",
                 strlen(hostlist) + 7);
         exit(EXIT_FAILURE);
       }
diff --git a/nslcd/myldap.c b/nslcd/myldap.c
index 2501974..f34221f 100644
--- a/nslcd/myldap.c
+++ b/nslcd/myldap.c
@@ -1064,14 +1064,14 @@ int myldap_set_credentials(MYLDAP_SESSION *session, const char *dn,
   if (strlen(dn) >= sizeof(session->binddn))
   {
     log_log(LOG_ERR,
-            "myldap_set_credentials(): binddn buffer too small (%d required)",
+            "myldap_set_credentials(): binddn buffer too small (%zu required)",
             strlen(dn));
     return -1;
   }
   if (strlen(password) >= sizeof(session->bindpw))
   {
     log_log(LOG_ERR,
-            "myldap_set_credentials(): bindpw buffer too small (%d required)",
+            "myldap_set_credentials(): bindpw buffer too small (%zu required)",
             strlen(password));
     return -1;
   }
@@ -1729,7 +1729,7 @@ static char **myldap_get_ranged_values(MYLDAP_ENTRY *entry, const char *attr)
   /* build the attribute name to find */
   if (mysnprintf(attbuf, sizeof(attbuf), "%s;range=0-*", attr))
   {
-    log_log(LOG_ERR, "myldap_get_ranged_values(): attbuf buffer too small (%d required)",
+    log_log(LOG_ERR, "myldap_get_ranged_values(): attbuf buffer too small (%zu required)",
             strlen(attr) + 10);
     return NULL;
   }