--- a/src/lib/compiler/Makefile.am
+++ b/src/lib/compiler/Makefile.am
@@ -4,10 +4,9 @@
 
 libcompiler_la_CPPFLAGS = -I$(top_srcdir)/src/include
 
-libcompiler_la_SOURCES = parser.yy scanner.ll Compiler.cc		\
-LogicalFactory.cc ParseTree.cc Counter.cc CounterTab.cc			\
-ConstantFactory.cc MixtureFactory.cc MixCompiler.cc NodeFactory.cc	\
-ObsFuncTab.cc
+libcompiler_la_SOURCES = parser.yy scanner.ll Compiler.cc	\
+LogicalFactory.cc ParseTree.cc Counter.cc CounterTab.cc		\
+MixtureFactory.cc MixCompiler.cc NodeFactory.cc ObsFuncTab.cc
 
 noinst_HEADERS = parser.hh parser_extra.h remap.h MixCompiler.h