diff --git a/src/CHANGELOG b/src/CHANGELOG
index a2ed5d0da..1188b059b 100644
--- a/src/CHANGELOG
+++ b/src/CHANGELOG
@@ -123,6 +123,8 @@ ECL 0.9i
    on the additionally checks whether the macroexpanded form is eq to the
    original one and complains of the infinite loop that results.
 
+ - Configuration flag --with-tcp defaults to true.
+
 * MOP compatibility:
 
  - SLOT-VALUE, SLOT-BOUNDP, etc, together with MOP SLOT*-USING-CLASS generic
diff --git a/src/configure b/src/configure
index ed42b4271..65a2b09ed 100755
--- a/src/configure
+++ b/src/configure
@@ -887,7 +887,7 @@ Optional Packages:
   --with-__thread         Enable __thread thread-local variables (supported by
                           NPTL-aware glibc and maybe Windows)
   --with-cxx              build ECL using C++ compiler (default=NO)
-  --with-tcp              include socket interface (default=NO)
+  --with-tcp              include socket interface (default=YES)
   --with-clx              include CLX library (default=NO)
   --with-clos-streams     user defined stream objects (default=YES)
   --with-cmuformat        use CMUCL's FORMAT routine (default=YES)
@@ -1533,7 +1533,7 @@ if test "${with_tcp+set}" = set; then
   withval="$with_tcp"
 
 else
-  with_tcp=no
+  with_tcp=yes
 fi;
 
 
diff --git a/src/configure.in b/src/configure.in
index fa2bd87cc..7453bcaaf 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -119,8 +119,8 @@ AC_ARG_WITH(cxx,
 
 AC_ARG_WITH(tcp,
   AS_HELP_STRING( [--with-tcp],
-                  [include socket interface (default=NO)]),
-  [], [with_tcp=no])
+                  [include socket interface (default=YES)]),
+  [], [with_tcp=yes])
 
 AC_ARG_WITH(clx,
   AS_HELP_STRING( [--with-clx],