diff --git a/autoconf/m4/build_exeext.m4 b/autoconf/m4/build_exeext.m4
index e44b58b8d99..5ea7d2e6412 100644
--- a/autoconf/m4/build_exeext.m4
+++ b/autoconf/m4/build_exeext.m4
@@ -18,7 +18,7 @@ else
      fi
   fi
   test -z "$BUILD_CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
-  ac_build_link='${BUILD_CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AS_MESSAGE_LOG_FD'
+  ac_build_link='${BUILD_CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AS_MESSAGE_LOG_FD'
   rm -f conftest*
   echo 'int main () { return 0; }' > conftest.$ac_ext
   ac_cv_build_exeext=