diff --git a/gdb/config.in b/gdb/config.in
index 0146bc38cff..a4975c68aad 100644
--- a/gdb/config.in
+++ b/gdb/config.in
@@ -775,9 +775,6 @@
    python-config.py --exec-prefix. */
 #undef WITH_PYTHON_PATH
 
-/* Define if the simulator is being linked in. */
-#undef WITH_SIM
-
 /* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
    significant byte first (like Motorola and SPARC, unlike Intel). */
 #if defined AC_APPLE_UNIVERSAL_BUILD
diff --git a/gdb/configure b/gdb/configure
index 7225c7fc60d..1008cbef28b 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -18673,9 +18673,6 @@ if test "${ignore_sim}" = "false"; then
     SIM="${gdb_sim}"
     SIM_OBS="remote-sim.o"
 
-$as_echo "#define WITH_SIM 1" >>confdefs.h
-
-
     # Some tdep code should only be compiled in when the ppc sim is
     # built.  PR sim/13418.
     case $target in
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 310c76557ae..e3c19bc8859 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -2044,7 +2044,6 @@ if test "${ignore_sim}" = "false"; then
   if test x"${gdb_sim}" != x ; then
     SIM="${gdb_sim}"
     SIM_OBS="remote-sim.o"
-    AC_DEFINE(WITH_SIM, 1, [Define if the simulator is being linked in.])
 
     # Some tdep code should only be compiled in when the ppc sim is
     # built.  PR sim/13418.