--- a/ldap/servers/slapd/filter.c
+++ b/ldap/servers/slapd/filter.c
@@ -765,7 +765,7 @@
         break;
 
     default:
-        slapi_log_err(SLAPI_LOG_ERR, "slapi_filter_free", "nknown type 0x%lX\n",
+        slapi_log_err(SLAPI_LOG_ERR, "slapi_filter_free", "Unknown type 0x%lX\n",
                       f->f_choice);
         break;
     }