diff --git a/packages/nethack/build.sh b/packages/nethack/build.sh
index d15f9b755..245d16ff6 100644
--- a/packages/nethack/build.sh
+++ b/packages/nethack/build.sh
@@ -3,7 +3,7 @@ TERMUX_PKG_DESCRIPTION="Dungeon crawl game"
 TERMUX_PKG_LICENSE="Nethack"
 TERMUX_PKG_MAINTAINER="Leonid Plyushch <leonid.plyushch@gmail.com> @xeffyr"
 TERMUX_PKG_VERSION=3.6.1
-TERMUX_PKG_SRCURL=http://www.nethack.org/download/${TERMUX_PKG_VERSION}/nethack-${TERMUX_PKG_VERSION/.//}-src.tgz
+TERMUX_PKG_SRCURL=http://www.nethack.org/download/${TERMUX_PKG_VERSION}/nethack-${TERMUX_PKG_VERSION//./}-src.tgz
 TERMUX_PKG_SHA256=4b8cbf1cc3ad9f6b9bae892d44a9c63106d44782a210906162a7c3be65040ab6
 TERMUX_PKG_DEPENDS="ncurses"
 TERMUX_PKG_BUILD_IN_SRC=yes