diff --git a/libgearman-server/connection.cc b/libgearman-server/connection.cc
index f9cc62942..22b1428af 100644
--- a/libgearman-server/connection.cc
+++ b/libgearman-server/connection.cc
@@ -222,7 +222,7 @@ void gearman_server_con_free(gearman_server_con_st *con)
 
   if (con->is_cleaned_up)
   {
-    gearmand_log_error(GEARMAN_DEFAULT_LOG_PARAM, "con %llu is already cleaned-up. returning", con);
+    gearmand_log_error(GEARMAN_DEFAULT_LOG_PARAM, "con %p is already cleaned-up. returning", con);
     return;
   }
   
@@ -334,7 +334,7 @@ void gearman_server_con_set_id(gearman_server_con_st *con,
 
   gearmand_log_debug(GEARMAN_DEFAULT_LOG_PARAM,
                      "identifier set to %.*s", 
-                     min_size, con->id);
+                     (uint32_t)min_size, con->id);
 }
 
 void gearman_server_con_free_worker(gearman_server_con_st *con,
@@ -692,7 +692,7 @@ gearmand_error_t gearman_server_con_add_job_timeout(gearman_server_con_st *con,
           worker->timeout= 1000;
         }
 
-        gearmand_log_debug(GEARMAN_DEFAULT_LOG_PARAM, "Adding timeout on %s for %s (%dl)",
+        gearmand_log_debug(GEARMAN_DEFAULT_LOG_PARAM, "Adding timeout on %s for %s (%ld)",
                            job->function->function_name,
                            job->job_handle,
                            worker->timeout);
diff --git a/libgearman-server/plugins/queue/redis/queue.cc b/libgearman-server/plugins/queue/redis/queue.cc
index 93ab1d684..a0ff30161 100644
--- a/libgearman-server/plugins/queue/redis/queue.cc
+++ b/libgearman-server/plugins/queue/redis/queue.cc
@@ -341,7 +341,7 @@ static gearmand_error_t _hiredis_add(gearman_server_st *, void *context,
   return gearmand_log_gerror(
     GEARMAN_DEFAULT_LOG_PARAM,
     GEARMAND_QUEUE_ERROR,
-    "failed to insert '%.*s' into redis", key.size(), &key[0]);
+    "failed to insert '%.*s' into redis", (uint32_t)key.size(), &key[0]);
 }
 
 static gearmand_error_t _hiredis_flush(gearman_server_st *, void *)
diff --git a/libgearman-server/text.cc b/libgearman-server/text.cc
index bd99d98e7..abc10a7b2 100644
--- a/libgearman-server/text.cc
+++ b/libgearman-server/text.cc
@@ -62,8 +62,8 @@ gearmand_error_t server_run_text(gearman_server_con_st *server_con,
   if (packet->argc)
   {
     gearmand_log_debug(GEARMAN_DEFAULT_LOG_PARAM, "text command %.*s %d arguments",
-                       packet->arg_size[0],  packet->arg[0],
-                       int(packet->argc));
+                       (uint32_t)packet->arg_size[0],  packet->arg[0],
+                       packet->argc);
   }
 
 #if 0
@@ -370,8 +370,8 @@ gearmand_error_t server_run_text(gearman_server_con_st *server_con,
   }
   else
   {
-    gearmand_log_debug(GEARMAN_DEFAULT_LOG_PARAM, "Failed to find command %.*s(%" PRIu64 ")",
-                       packet->arg_size[0], packet->arg[0], 
+    gearmand_log_debug(GEARMAN_DEFAULT_LOG_PARAM, "Failed to find command %.*s(%zu)",
+                       (uint32_t)packet->arg_size[0], packet->arg[0], 
                        packet->arg_size[0]);
     data.vec_printf(TEXT_ERROR_UNKNOWN_COMMAND, (int)packet->arg_size[0], (char *)(packet->arg[0]));
   }
diff --git a/libgearman-server/thread.cc b/libgearman-server/thread.cc
index 7219e55a4..247611719 100644
--- a/libgearman-server/thread.cc
+++ b/libgearman-server/thread.cc
@@ -188,7 +188,7 @@ gearman_server_thread_run(gearman_server_thread_st *thread,
       if (server_con->is_dead && server_con->proc_removed)
         gearman_server_con_free(server_con);
       else
-        gearmand_log_error(GEARMAN_DEFAULT_LOG_PARAM, "con %llu isn't dead %d or proc removed %d, but is in to_be_freed_list",
+        gearmand_log_error(GEARMAN_DEFAULT_LOG_PARAM, "con %p isn't dead %d or proc removed %d, but is in to_be_freed_list",
                            server_con, server_con->is_dead, server_con->proc_removed);
     }
 
diff --git a/libgearman/check.cc b/libgearman/check.cc
index 5ee18734e..f39e7ed39 100644
--- a/libgearman/check.cc
+++ b/libgearman/check.cc
@@ -100,8 +100,8 @@ gearman_return_t CancelCheck::success(gearman_connection_st* con)
 
       return gearman_universal_set_error(_universal, maybe_server_error, GEARMAN_AT, "%s:%s %.*s:%.*s",
                                          con->host(), con->service(),
-                                         con->_packet.arg_size[0], con->_packet.arg[0],
-                                         con->_packet.arg_size[1], con->_packet.arg[1]
+                                         (uint32_t)con->_packet.arg_size[0], con->_packet.arg[0],
+                                         (uint32_t)con->_packet.arg_size[1], con->_packet.arg[1]
                                         );
     }
 
@@ -127,13 +127,13 @@ gearman_return_t OptionCheck::success(gearman_connection_st* con)
 
       return gearman_universal_set_error(_universal, maybe_server_error, GEARMAN_AT, "%s:%s Invalid option %.*s",
                                          con->host(), con->service(),
-                                         con->_packet.arg_size[0], con->_packet.arg[0]
+                                         (uint32_t)con->_packet.arg_size[0], con->_packet.arg[0]
                                         );
     }
 
     return gearman_universal_set_error(_universal, GEARMAN_INVALID_SERVER_OPTION, GEARMAN_AT, "%s:%s Invalid option %.*s",
                                        con->host(), con->service(),
-                                       con->_packet.arg_size[0], con->_packet.arg[0]
+                                       (uint32_t)con->_packet.arg_size[0], con->_packet.arg[0]
                                       );
   }