diff --git a/SRC/configure b/SRC/configure
index 57538d0..9a90283 100755
--- a/SRC/configure
+++ b/SRC/configure
@@ -1758,7 +1758,7 @@ if { (eval echo configure:1757: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5;
   cat >> confdefs.h <<\EOF
 #define TTCP 1
 EOF
-,ac_have_ttcp=yes
+;ac_have_ttcp="yes"
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
diff --git a/SRC/configure.in b/SRC/configure.in
index 33b879a..9302149 100644
--- a/SRC/configure.in
+++ b/SRC/configure.in
@@ -50,7 +50,7 @@ AC_TRY_COMPILE(
   #include <sys/socket.h>
  ],
  [int foobar = MSG_EOF;],
- [AC_DEFINE(TTCP),ac_have_ttcp=yes],
+ [AC_DEFINE(TTCP);ac_have_ttcp="yes"],
  ac_have_ttcp=no)
 AC_MSG_RESULT($ac_have_ttcp)
 AC_ARG_ENABLE(ttcp,