diff --git a/mex/sources/estimation/Makefile.am b/mex/sources/estimation/Makefile.am
index 7eaf9ae4db48f12de821684ed0fb9faa8cc2e0a0..f1b7ece1d6f788bcbc033cb7df79b1d3dc878830 100644
--- a/mex/sources/estimation/Makefile.am
+++ b/mex/sources/estimation/Makefile.am
@@ -37,7 +37,6 @@ EXTRA_DIST = \
 	Prior.hh \
 	Proposal.cc \
 	Proposal.hh \
-	RandomWalkMetropolisHastings.cc \
 	RandomWalkMetropolisHastings.hh \
 	utils/dynamic_dll.cc \
 	utils/dynamic_dll.hh \