diff --git a/configure.ac b/configure.ac
index c54692e..b2b6fd1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -8,7 +8,6 @@ AC_CONFIG_SRCDIR([pam_check.h])
 AC_CONFIG_HEADERS([config.h])
 
 # Checks for programs.
-AC_PROG_CXX
 AC_PROG_CC
 AC_PROG_INSTALL