diff --git a/src/common/items/weapons.c b/src/common/items/weapons.c
index 17921cc15..8b2b2a83d 100644
--- a/src/common/items/weapons.c
+++ b/src/common/items/weapons.c
@@ -273,8 +273,6 @@ enum {
   AR_RUSTY_CHAIN,
   AR_SHIELD,
   AR_RUSTY_SHIELD,
-  AR_EOGSHIELD,
-  AR_EOGCHAIN,
   AR_MAX
 };
 
diff --git a/src/common/kernel/item.c b/src/common/kernel/item.c
index f9fbcfcca..0ccf4fff8 100644
--- a/src/common/kernel/item.c
+++ b/src/common/kernel/item.c
@@ -2429,4 +2429,7 @@ register_resources(void)
   register_function((pf_generic)use_snowball, "usesnowball");
 
   register_function((pf_generic)give_horses, "givehorses");
+
+  /* make sure noone has deleted an I_ tpe without deleting the R_ type that goes with it! */
+  assert((int)I_SACK_OF_CONSERVATION == (int)R_SACK_OF_CONSERVATION);
 }
diff --git a/src/common/kernel/item.h b/src/common/kernel/item.h
index 397757523..44abf0481 100644
--- a/src/common/kernel/item.h
+++ b/src/common/kernel/item.h
@@ -412,8 +412,6 @@ enum {
 	R_GREATSWORD,
 	R_AXE,
 	R_EOGSWORD,
-	R_EOGSHIELD,
-	R_EOGCHAIN,
 	R_EOG,
 	R_SHIELD,
 	R_LANCE,