diff --git a/hhe/common.rb b/hhe/common.rb
index b0a643b..0caf061 100644
--- a/hhe/common.rb
+++ b/hhe/common.rb
@@ -83,6 +83,9 @@ def set_config(name)
 	for config in configs
 		if name == config::NAME
 			include config
+			return
 		end
 	end
+
+	raise "Unknown configuration: #{name}"
 end
diff --git a/hhe/dump-strings b/hhe/dump-strings
index e796eeb..671bb05 100755
--- a/hhe/dump-strings
+++ b/hhe/dump-strings
@@ -1,6 +1,9 @@
 #!/usr/bin/env ruby
 
 require "json"
+require "common"
+
+set_config(ARGV[1])
 
 def read_block(file)
         result = ""
@@ -34,7 +37,7 @@ end
 File.open(ARGV[0]) do |file|
         current_str = ""
 
-	file.seek(554068 )
+	file.seek(STRINGS_OFFSET)
 
 	offset = 0
 	start_offset = nil
diff --git a/hhe/v1.0/config.rb b/hhe/v1.0/config.rb
index fc2e2be..e95dd90 100755
--- a/hhe/v1.0/config.rb
+++ b/hhe/v1.0/config.rb
@@ -8,6 +8,7 @@ NUM_MOBJS=161
 
 STATE_OFFSET=0x8bf04
 MOBJINFO_OFFSET=606956
+STRINGS_OFFSET=554068
 
 # Locations of action pointer functions for Heretic 1.0.  Hand-constructed.
 
diff --git a/hhe/v1.2/config.rb b/hhe/v1.2/config.rb
index d630f6f..eb8fc8a 100755
--- a/hhe/v1.2/config.rb
+++ b/hhe/v1.2/config.rb
@@ -8,6 +8,7 @@ NUM_MOBJS=160
 
 STATE_OFFSET=0x8e8b4
 MOBJINFO_OFFSET=617600
+STRINGS_OFFSET=563284
 
 # Locations of action pointer functions for Heretic 1.2.  Hand-constructed.
 
diff --git a/hhe/v1.3/config.rb b/hhe/v1.3/config.rb
index e71e990..c27da60 100755
--- a/hhe/v1.3/config.rb
+++ b/hhe/v1.3/config.rb
@@ -8,6 +8,7 @@ NUM_MOBJS=160
 
 STATE_OFFSET=0x8e8b4
 MOBJINFO_OFFSET=617600
+STRINGS_OFFSET=563284
 
 # Action pointers for Heretic 1.3.