diff --git a/configure.ac b/configure.ac
index 7d333c0c..8a94f81f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -134,13 +134,6 @@ AC_ARG_ENABLE(
 	[enable_minidriver="no"]
 )
 
-AC_ARG_ENABLE(
-	[sm],
-	[AS_HELP_STRING([--enable-sm],[enable secure messaging support and modules @<:@disabled@:>@])],
-	,
-	[enable_sm="no"]
-)
-
 AC_ARG_ENABLE(
 	[man],
 	[AS_HELP_STRING([--disable-man],[disable installation of manuals @<:@enabled for none Windows@:>@])],
@@ -310,10 +303,6 @@ if test "${enable_minidriver}" = "yes"; then
 	AC_DEFINE([ENABLE_MINIDRIVER], [1], [Enable minidriver support])
 fi
 
-if test "${enable_sm}" = "yes"; then
-        AC_DEFINE([ENABLE_SM], [1], [Enable secure messaging support])
-fi
-
 AC_ARG_VAR([ZLIB_CFLAGS], [C compiler flags for zlib])
 AC_ARG_VAR([ZLIB_LIBS], [linker flags for zlib])
 if test -z "${ZLIB_LIBS}"; then
@@ -573,7 +562,6 @@ AM_CONDITIONAL([ENABLE_DOC], [test "${enable_doc}" = "yes"])
 AM_CONDITIONAL([WIN32], [test "${WIN32}" = "yes"])
 AM_CONDITIONAL([CYGWIN], [test "${CYGWIN}" = "yes"])
 AM_CONDITIONAL([ENABLE_MINIDRIVER], [test "${enable_minidriver}" = "yes"])
-AM_CONDITIONAL([ENABLE_SM], [test "${enable_sm}" = "yes"])
 
 if test "${enable_pedantic}" = "yes"; then
 	enable_strict="yes";
@@ -634,7 +622,6 @@ PC/SC support:           ${enable_pcsc}
 OpenCT support:          ${enable_openct}
 CT-API support:          ${enable_ctapi}
 minidriver support:      ${enable_minidriver}
-SM support:              ${enable_sm}
 
 PC/SC default provider:  ${DEFAULT_PCSC_PROVIDER}