diff --git a/nslcd/attmap.c b/nslcd/attmap.c
index d024a59..5aad41f 100644
--- a/nslcd/attmap.c
+++ b/nslcd/attmap.c
@@ -276,8 +276,8 @@ 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)",
-              strlen(values[0]));
+      log_log(LOG_ERR, "attmap_get_value(): buffer too small (%lu required)",
+              (unsigned long) strlen(values[0]));
       return NULL;
     }
     strncpy(buffer, values[0], buflen);
diff --git a/nslcd/cfg.c b/nslcd/cfg.c
index 4928244..cec1b0c 100644
--- a/nslcd/cfg.c
+++ b/nslcd/cfg.c
@@ -457,8 +457,8 @@ 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)",
-                strlen(hostlist) + 8);
+        log_log(LOG_ERR, "add_uris_from_dns(): buf buffer too small (%lu required)",
+                (unsigned long) strlen(hostlist) + 8);
         exit(EXIT_FAILURE);
       }
     }
@@ -469,8 +469,8 @@ 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)",
-                strlen(hostlist) + 7);
+        log_log(LOG_ERR, "add_uris_from_dns(): buf buffer too small (%lu required)",
+                (unsigned long) strlen(hostlist) + 7);
         exit(EXIT_FAILURE);
       }
     }
diff --git a/nslcd/myldap.c b/nslcd/myldap.c
index 2501974..33b8d60 100644
--- a/nslcd/myldap.c
+++ b/nslcd/myldap.c
@@ -1064,15 +1064,15 @@ 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)",
-            strlen(dn));
+            "myldap_set_credentials(): binddn buffer too small (%lu required)",
+            (unsigned long) strlen(dn));
     return -1;
   }
   if (strlen(password) >= sizeof(session->bindpw))
   {
     log_log(LOG_ERR,
-            "myldap_set_credentials(): bindpw buffer too small (%d required)",
-            strlen(password));
+            "myldap_set_credentials(): bindpw buffer too small (%lu required)",
+            (unsigned long) strlen(password));
     return -1;
   }
   /* copy dn and password into session */
@@ -1729,8 +1729,8 @@ 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)",
-            strlen(attr) + 10);
+    log_log(LOG_ERR, "myldap_get_ranged_values(): attbuf buffer too small (%lu required)",
+            (unsigned long) strlen(attr) + 10);
     return NULL;
   }
   /* keep doing lookups untul we can't get any more results */