diff --git a/libs/xmlrpc-c/configure.in b/libs/xmlrpc-c/configure.in
index 7ebb50ae87..231a1d3bbd 100644
--- a/libs/xmlrpc-c/configure.in
+++ b/libs/xmlrpc-c/configure.in
@@ -198,9 +198,7 @@ dnl Checks for programs.
 dnl =======================================================================
 
 AC_PROG_CC
-if test x"$enable_cplusplus" != xno; then
-    AC_PROG_CXX
-fi
+AC_PROG_CXX
 
 
 dnl =======================================================================