diff --git a/tecs/logfile.c b/tecs/logfile.c
index aaa4e38b..b99e5f13 100644
--- a/tecs/logfile.c
+++ b/tecs/logfile.c
@@ -21,6 +21,8 @@ static char *eptr=&ebuf[0];
 static int lastStamp=0;
 static int notDated=0;
 
+int ftime (struct timeb *__timeptr); /* for some reason not defined in timeb.h with flag -std1 */
+
 int logfileStd=0;
 int dirty=0;
 
diff --git a/tecs/logfile.h b/tecs/logfile.h
index a4b495b8..916073ae 100644
--- a/tecs/logfile.h
+++ b/tecs/logfile.h
@@ -1,14 +1,14 @@
 #include "buf.h"
 
 void logfileInit(char *path, int nodate);
-void logfileUpd();
+void logfileUpd(void);
 void logfileStamp(char *text);
 void logfileOut(char *fmt, ...);
 void logfileOutTmp(char *fmt, ...);
 void logfileOutBuf(buf_type *buf);
 void logfileShowErr(char *text);
-void logfilePurge();
-void logfileWriteTmp();
-void logfileClose();
+void logfilePurge(void);
+void logfileWriteTmp(void);
+void logfileClose(void);
 
 extern int logfileStd;
diff --git a/tecs/serutil.c b/tecs/serutil.c
index b177c799..24702c9a 100644
--- a/tecs/serutil.c
+++ b/tecs/serutil.c
@@ -21,7 +21,7 @@ struct SerChan {
   char cmd[SER_BUF_LEN];
 };
 
-void SerA_error() {
+void SerA_error(void) {
   char *a_txt;
   int a_cod, a_my, a_vms;
 
diff --git a/tecs/server.c b/tecs/server.c
index 03b7734f..83a52ab2 100644
--- a/tecs/server.c
+++ b/tecs/server.c
@@ -1,3 +1,8 @@
+/* needed to define ftime(), accept() and gethostbyaddr() correctly when using flag -std1 */
+#ifndef _XOPEN_SOURCE_EXTENDED
+#define _XOPEN_SOURCE_EXTENDED
+#endif
+
 #include <sys/time.h>
 #include <sys/timeb.h>
 #include <assert.h>
@@ -32,7 +37,7 @@ int CocInitServer(int bufsize, int port) {
   ERR_I(CocCreateSockAdr(&sadr, NULL, port));
   ERR_SI(bind(mainFd, (struct sockaddr *)&sadr, sizeof(sadr)));
   logfileOut("created server on port %d\n", port);
-  ERR_SI(listen(mainFd, SOMAXCONN));
+  ERR_SI(listen(mainFd, 8));
   FD_ZERO(&mask);
   FD_SET(mainFd, &mask);
   maxfd=mainFd+1;
diff --git a/tecs/server.h b/tecs/server.h
index aa75eb89..38bfb50a 100644
--- a/tecs/server.h
+++ b/tecs/server.h
@@ -27,9 +27,9 @@ int CocHandle1Request(int tmo_msec, int fd);
 
 */
 
-struct CocClient *CocGetNextCmd();
+struct CocClient *CocGetNextCmd(void);
 /*
   get next client with a pending command
 */
 
-void CocCloseServer();
+void CocCloseServer(void);