diff --git a/zig-impl/crystal/some-crystal-app/makefile b/zig-impl/crystal/some-crystal-app/makefile
index 5016d37..4866368 100644
--- a/zig-impl/crystal/some-crystal-app/makefile
+++ b/zig-impl/crystal/some-crystal-app/makefile
@@ -14,3 +14,12 @@ valgrind:
 
 run:
 	LD_LIBRARY_PATH=$(LDPATH) $(SRC)
+
+run-pongd:
+	LD_LIBRARY_PATH=$(LDPATH) ./bin/pongd
+
+build-pongd:
+	CRYSTAL_LIBRARY_PATH=$(LDPATH) shards build pongd
+
+run-test:
+	crystal run src/libauth.cr
diff --git a/zig-impl/crystal/some-crystal-app/shard.yml b/zig-impl/crystal/some-crystal-app/shard.yml
index 3fafe97..6ed8707 100644
--- a/zig-impl/crystal/some-crystal-app/shard.yml
+++ b/zig-impl/crystal/some-crystal-app/shard.yml
@@ -5,8 +5,10 @@ authors:
   - Philippe Pittoli <karchnu@karchnu.fr>
 
 targets:
-  some-crystal-app:
-    main: src/some-crystal-app.cr
+  main:
+    main: src/main.cr
+  pongd:
+    main: src/pongd.cr
 
 crystal: 1.7.1
 
diff --git a/zig-impl/crystal/some-crystal-app/src/pongd.cr b/zig-impl/crystal/some-crystal-app/src/pongd.cr
index c8bb255..063a9de 100644
--- a/zig-impl/crystal/some-crystal-app/src/pongd.cr
+++ b/zig-impl/crystal/some-crystal-app/src/pongd.cr
@@ -1,4 +1,4 @@
-require "./some-crystal-app.cr"
+require "./main.cr"
 
 # In 5 messages: quit
 count = 5