diff --git a/spec/test.cr b/spec/test.cr
index bc917c2..e9808a3 100644
--- a/spec/test.cr
+++ b/spec/test.cr
@@ -88,7 +88,7 @@ class PrimitiveShip
 	]
 end
 
-class DODB::SpecDataBase < DODB::DataBase(String, Ship)
+class DODB::SpecDataBase < DODB::DataBase(Ship)
 	def initialize(storage_ext = "")
 		storage_dir = "test-storage#{storage_ext}"
 
@@ -306,7 +306,7 @@ describe "DODB::DataBase" do
 		end
 
 		it "migrates properly" do
-			old_db = DODB::DataBase(String, PrimitiveShip).new "test-storage-migration-origin"
+			old_db = DODB::DataBase(PrimitiveShip).new "test-storage-migration-origin"
 
 			old_ships_by_name  = old_db.new_index     "name", &.name
 			old_ships_by_class = old_db.new_partition "class", &.class_name
diff --git a/src/dodb.cr b/src/dodb.cr
index f299cb5..5ea5994 100644
--- a/src/dodb.cr
+++ b/src/dodb.cr
@@ -3,7 +3,7 @@ require "json"
 
 require "./dodb/*"
 
-class DODB::DataBase(K, V)
+class DODB::DataBase(V)
 	@indexers = [] of Indexer(V)
 
 	def initialize(@directory_name : String)
@@ -67,14 +67,13 @@ class DODB::DataBase(K, V)
 		index.not_nil!.as(DODB::Index).get key
 	end
 
-	# FIXME: Is this “key” really a K, not just a String?
 	def get_partition(table_name : String, partition_name : String)
 		partition = @indexers.find &.name.==(table_name)
 
 		partition.not_nil!.as(DODB::Partition).get partition_name
 	end
 
-	def get_tags(name, key : K)
+	def get_tags(name, key : String)
 		partition = @indexers.find &.name.==(name)
 
 		partition.not_nil!.as(DODB::Tags).get name, key