diff --git a/srcpkgs/lftp/template b/srcpkgs/lftp/template
index c1a246e0700..c0f12dfc671 100644
--- a/srcpkgs/lftp/template
+++ b/srcpkgs/lftp/template
@@ -6,7 +6,8 @@ lib32disabled=yes
 build_style=gnu-configure
 configure_args="--with-modules --disable-rpath --without-included-regex
  --with-openssl --with-libidn i_cv_posix_fallocate_works=yes
- --with-zlib=${XBPS_CROSS_BASE}/usr --with-readline=${XBPS_CROSS_BASE}/usr"
+ --with-zlib=${XBPS_CROSS_BASE}/usr --with-readline=${XBPS_CROSS_BASE}/usr
+ gl_cv_func_signbit=yes"
 hostmakedepends="automake libtool pkg-config gettext-devel wget"
 makedepends="zlib-devel ncurses-devel readline-devel libressl-devel
  expat-devel libidn-devel"