diff --git a/tests/engine/cart_manifest.lua b/tests/engine/cart_manifest.lua
index 37a4a197..493fdc9a 100644
--- a/tests/engine/cart_manifest.lua
+++ b/tests/engine/cart_manifest.lua
@@ -139,7 +139,7 @@ rejects(function(c) c.label = "../../etc/passwd" end, "cart label", "a climbing
 rejects(function(c) c.label = "/etc/passwd" end, "cart label", "an absolute label path")
 rejects(function(c) c.label = ("a"):rep(129) end, "cart label", "a 129 character label path")
 rejects(function(c) c.base = nil end, "cart base", "a missing base game")
-rejects(function(c) c.base = "crystal" end, "cart base", "an unknown base game")
+rejects(function(c) c.base = "nonesuch" end, "cart base", "an unknown base game")
 rejects(function(c) c.engine = "" end, "cart engine", "an empty engine range")
 rejects(function(c) c.engine = 3 end, "cart engine", "a numeric engine range")
 rejects(function(c) c.seal = "welded" end, "cart seal", "an unknown seal")
diff --git a/tools/cartkit.py b/tools/cartkit.py
index 4852eba9..b1febf74 100644
--- a/tools/cartkit.py
+++ b/tools/cartkit.py
@@ -57,7 +57,7 @@ BUNDLE_FORMAT = "g1rcart"
 BUNDLE_VERSION = 1
 CART_SCHEMA = 1
 
-BASES = ("red", "blue", "yellow", "gold", "silver")
+BASES = ("red", "blue", "yellow", "gold", "silver", "crystal")
 SEALS = ("sealed", "open")
 SOURCES = ("github", "gamebanana")
 MAX_MODS = 64
@@ -1380,7 +1380,7 @@ def t_identity():
                        ("title", ""), ("title", "t" * 49),
                        ("version", "1.0"), ("version", "v1.0.0"),
                        ("author", ""), ("shell", "8b1a1a"),
-                       ("shell", "#8b1a1"), ("base", "crystal"),
+                       ("shell", "#8b1a1"), ("base", "nonesuch"),
                        ("seal", "welded"), ("schema", 2),
                        ("summary", "s" * 121), ("repo", "someone"),
                        ("engine", ">=1.0.0 <<2.0.0")):