diff --git a/configure.ac b/configure.ac
index 54f6e0e28..9b81c3f4b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -677,6 +677,7 @@ if test "$my_htop_platform" = "solaris"; then
 fi
 AC_CHECK_FUNCS( [set_escdelay] )
 AC_CHECK_FUNCS( [getmouse] )
+AC_DEFINE([NCURSES_ENABLE_STDBOOL_H], [1], [Define to enable stdbool.h in ncurses])
 
 
 AC_ARG_ENABLE([affinity],