diff --git a/tools/depends/target/config.site.in b/tools/depends/target/config.site.in
index 252a4dcd04590..529e8af17944c 100644
--- a/tools/depends/target/config.site.in
+++ b/tools/depends/target/config.site.in
@@ -70,6 +70,7 @@ jm_cv_func_gettimeofday_clobber=no
 mac_cv_pkg_ldflags=-lz
 if test "@platform_os@" = "osx"; then
   ac_cv_func_strnlen_working=no
+  ac_cv_header_stdbool_h=yes
 fi
 
 #gnutls