diff --git a/aclocal.m4 b/aclocal.m4
index db5f3e2..310d5b0 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -37,7 +37,7 @@ dnl
 dnl Does struct msghdr have the msg_control field?
 dnl --------------------------------------------------------------------------
 AH_TEMPLATE([HAVE_MSGHDR_MSG_CONTROL],
-[Define to 1 if struct msghdr has the msg_control field.])
+[Define if struct msghdr has the msg_control field.])
 
 AC_DEFUN(PA_MSGHDR_MSG_CONTROL,
 [AC_MSG_CHECKING([for msg_control in struct msghdr])
@@ -68,7 +68,7 @@ dnl lack struct in_pktinfo; if so we need to include the definition
 dnl ourselves -- but we only want to do that if absolutely necessary!
 dnl ------------------------------------------------------------------------
 AH_TEMPLATE([HAVE_STRUCT_IN_PKTINFO],
-[Define to 1 if struct in_pktinfo is defined.])
+[Define if struct in_pktinfo is defined.])
 
 AC_DEFUN(PA_STRUCT_IN_PKTINFO,
 [AC_MSG_CHECKING([for definition of struct in_pktinfo])
@@ -101,7 +101,7 @@ dnl Do we have the tcpwrappers -lwrap?  This can't be done using AC_CHECK_LIBS
 dnl due to the need to provide "allow_severity" and "deny_severity" variables
 dnl --------------------------------------------------------------------------
 AH_TEMPLATE([HAVE_TCPWRAPPERS],
-[Define to 1 if we have tcpwrappers (-lwrap) and <tcpd.h>.])
+[Define if we have tcpwrappers (-lwrap) and <tcpd.h>.])
 
 AC_DEFUN(PA_HAVE_TCPWRAPPERS,
 [AC_CHECK_LIB([wrap], [main])
diff --git a/configure.in b/configure.in
index 4054740..c9e5b29 100644
--- a/configure.in
+++ b/configure.in
@@ -64,7 +64,7 @@ PA_MSGHDR_MSG_CONTROL
 PA_STRUCT_IN_PKTINFO
 
 AH_TEMPLATE([HAVE_IPPORT_TFTP_DEFINITION],
-[Define to 1 if netinet/in.h defines IPPORT_TFTP.])
+[Define if netinet/in.h defines IPPORT_TFTP.])
 PA_HEADER_DEFINES(netinet/in.h, int, IPPORT_TFTP)
 
 PA_WITH_BOOL(tcpwrappers, 1,
@@ -75,7 +75,7 @@ PA_WITH_BOOL(tcpwrappers, 1,
 ],:)
 
 AH_TEMPLATE([WITH_REGEX],
-[Define to 1 if we are compiling with regex filename remapping.])
+[Define if we are compiling with regex filename remapping.])
 
 PA_WITH_BOOL(remap, 1,
 [ --without-remap       Disable regex-based filename remapping],
@@ -91,7 +91,7 @@ PA_WITH_BOOL(remap, 1,
 ],:)
 
 AH_TEMPLATE([HAVE_SIGSETJMP],
-[Define to 1 if we have sigsetjmp, siglongjmp and sigjmp_buf.])
+[Define if we have sigsetjmp, siglongjmp and sigjmp_buf.])
 PA_SIGSETJMP([AC_DEFINE(HAVE_SIGSETJMP)])
 
 LIBXTRA=false