diff --git a/configure.ac b/configure.ac
index 9432dc60..231b6dfb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -76,6 +76,7 @@ AC_MSG_CHECKING([whether compiler supports $1])
 T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
 JE_APPEND_VS(CONFIGURE_CXXFLAGS, $1)
 JE_CONCAT_VVV(CXXFLAGS, CONFIGURE_CXXFLAGS, SPECIFIED_CXXFLAGS)
+AC_LANG_PUSH([C++])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
 [[
 ]], [[
@@ -87,6 +88,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
               AC_MSG_RESULT([no])
               [CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"]
 )
+AC_LANG_POP([C++])
 JE_CONCAT_VVV(CXXFLAGS, CONFIGURE_CXXFLAGS, SPECIFIED_CXXFLAGS)
 ])