diff --git a/Make.sysdefs b/Make.sysdefs
index b61c3862..b64d683f 100644
--- a/Make.sysdefs
+++ b/Make.sysdefs
@@ -52,7 +52,7 @@ NTCFLAGS = /D_WIN32 /Od /G3 /Zp2 /nologo /MT
 NTLFLAGS =
 NTMASTER = CC=CL GLOBALCFLAGS="$(NTCFLAGS)" GLOBALLFLAGS="$(NTLFLAGS)"
 
-INTERIXCFLAGS = -g -fno-common -D_EMPTH_POSIX=1 -U_EMPTH_LWP -DLISTENMAXCONN=5 -DRel4 -D_ALL_SOURCE $(GCCWARNFLAGS)
+INTERIXCFLAGS = -g -fno-common -D_EMPTH_POSIX=1 -U_EMPTH_LWP -DRel4 -D_ALL_SOURCE $(GCCWARNFLAGS)
 INTERIXLFLAGS = -lpthread
 INTERIXMASTER = GLOBALCFLAGS="$(INTERIXCFLAGS)" GLOBALLFLAGS="$(INTERIXLFLAGS)" CLIENTLIBS=-lncurses
 
@@ -60,11 +60,11 @@ NEXTCFLAGS = -bsd -fwritable-strings -traditional -Dconst="" -Dinline=""
 NEXTLFLAGS = -lsys_s
 NEXTMASTER = GLOBALCFLAGS="$(NEXTCFLAGS)" GLOBALLFLAGS="$(NEXTLFLAGS)"
 
-LINUXCFLAGS = -g -fno-common -D__USE_BSD -DLISTENMAXCONN=5 -DRel4 $(GCCWARNFLAGS) 
+LINUXCFLAGS = -g -fno-common -D__USE_BSD -DRel4 $(GCCWARNFLAGS) 
 LINUXLFLAGS = 
 LINUXMASTER = GLOBALCFLAGS="$(LINUXCFLAGS)" GLOBALLFLAGS="$(LINUXLFLAGS)" CLIENTLIBS=-lncurses
 
-LINUXPTHCFLAGS = -g -fno-common -D_EMPTH_POSIX=1 -U_EMPTH_LWP -DLISTENMAXCONN=5 -DRel4 $(GCCWARNFLAGS)
+LINUXPTHCFLAGS = -g -fno-common -D_EMPTH_POSIX=1 -U_EMPTH_LWP -DRel4 $(GCCWARNFLAGS)
 LINUXPTHLFLAGS = -lpthread
 LINUXPTHMASTER = GLOBALCFLAGS="$(LINUXPTHCFLAGS)" GLOBALLFLAGS="$(LINUXPTHLFLAGS)" CLIENTLIBS=-lncurses