diff --git a/Makefile.am b/Makefile.am
index e997b93..343f900 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -20,6 +20,7 @@ GHC_OPTS = \
 	-iflow \
 	-ifrontends \
 	-ipass \
+	-ipregen \
 	-itransformations
 
 if GHC68
@@ -167,8 +168,8 @@ tocktest_SOURCES += frontends/RainTypesTest.hs
 tocktest_SOURCES += frontends/StructureOccamTest.hs
 tocktest_SOURCES += transformations/PassTest.hs
 
-GenTagAST_SOURCES = GenTagAST.hs
-GenOrdAST_SOURCES = GenOrdAST.hs
+GenTagAST_SOURCES = pregen/GenTagAST.hs
+GenOrdAST_SOURCES = pregen/GenOrdAST.hs
 
 #The programs to actually build:	
 bin_PROGRAMS = tock
diff --git a/GenOrdAST.hs b/pregen/GenOrdAST.hs
similarity index 100%
rename from GenOrdAST.hs
rename to pregen/GenOrdAST.hs
diff --git a/GenTagAST.hs b/pregen/GenTagAST.hs
similarity index 100%
rename from GenTagAST.hs
rename to pregen/GenTagAST.hs