diff --git a/sim/ppc/configure b/sim/ppc/configure
index 59c4d17d344..79157215005 100755
--- a/sim/ppc/configure
+++ b/sim/ppc/configure
@@ -3144,7 +3144,7 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking if union semun defined" >&5
 $as_echo_n "checking if union semun defined... " >&6; }
-if ${ac_cv_HAS_UNION_SEMUN+:} false; then :
+if ${ac_cv_has_union_semun+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -3167,13 +3167,10 @@ else
   ac_cv_has_union_semun="no"
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_has_union_semun" >&5
 $as_echo "$ac_cv_has_union_semun" >&6; }
 
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_HAS_UNION_SEMUN" >&5
-$as_echo "$ac_cv_HAS_UNION_SEMUN" >&6; }
-
 
 if test "$ac_cv_has_union_semun" = "yes"; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether System V semaphores are supported" >&5
diff --git a/sim/ppc/configure.ac b/sim/ppc/configure.ac
index adb4fc00a01..1f61ff1bace 100644
--- a/sim/ppc/configure.ac
+++ b/sim/ppc/configure.ac
@@ -97,16 +97,14 @@ esac
 ])dnl
 
 AC_CACHE_CHECK([if union semun defined],
-  ac_cv_HAS_UNION_SEMUN,
+  [ac_cv_has_union_semun],
   [AC_TRY_COMPILE([
 #include <sys/types.h>
 #include <sys/ipc.h>
 #include <sys/sem.h>],
 [union semun arg ;],
 [ac_cv_has_union_semun="yes"],
-[ac_cv_has_union_semun="no"])
-AC_MSG_RESULT($ac_cv_has_union_semun)
-])
+[ac_cv_has_union_semun="no"])])
 
 
 if test "$ac_cv_has_union_semun" = "yes"; then