diff --git a/scripts/install b/scripts/install
index 5300875..4dcf6f6 100755
--- a/scripts/install
+++ b/scripts/install
@@ -81,7 +81,7 @@ ynh_add_nginx_config
 ynh_script_progression --message="Compiling guacd..." --weight=30
 
 pushd "$install_dir/.guacd-src"
-	./configure --enable-allow-freerdp-snapshots --prefix="$install_dir" --datadir="$install_dir" --with-freerdp-plugin-dir="$install_dir/lib/x86_64-linux-gnu/freerdp2"
+	LDFLAGS="-lrt" ./configure --enable-allow-freerdp-snapshots --prefix="$install_dir" --datadir="$install_dir" --with-freerdp-plugin-dir="$install_dir/lib/x86_64-linux-gnu/freerdp2"
 	ynh_exec_warn_less make
 	ynh_exec_warn_less make install
 popd
diff --git a/scripts/upgrade b/scripts/upgrade
index 0351fe0..31f0a36 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -91,7 +91,7 @@ fi
 ynh_script_progression --message="Compiling guacd..." --weight=30
 
 pushd "$install_dir/.guacd-src"
-	./configure --enable-allow-freerdp-snapshots --prefix="$install_dir" --datadir="$install_dir" --with-freerdp-plugin-dir="$install_dir/lib/x86_64-linux-gnu/freerdp2"
+	LDFLAGS="-lrt" ./configure --enable-allow-freerdp-snapshots --prefix="$install_dir" --datadir="$install_dir" --with-freerdp-plugin-dir="$install_dir/lib/x86_64-linux-gnu/freerdp2"
 	ynh_exec_warn_less make
 	ynh_exec_warn_less make install
 popd