diff --git a/src/StdMeshers_I/Makefile.am b/src/StdMeshers_I/Makefile.am
index 03c8cf11f..31f0ef39f 100644
--- a/src/StdMeshers_I/Makefile.am
+++ b/src/StdMeshers_I/Makefile.am
@@ -90,9 +90,9 @@ dist_libStdMeshersEngine_la_SOURCES = \
 	StdMeshers_Projection_1D_2D_3D_i.cxx \
 	StdMeshers_ObjRefUlils.cxx \
 	StdMeshers_LayerDistribution_i.cxx \
-	StdMeshers_CompositeSegment_1D_i.hxx \
-	StdMeshers_SegmentAroundVertex_0D_i.hxx \
-	StdMeshers_SegmentLengthAroundVertex_i.hxx
+	StdMeshers_CompositeSegment_1D_i.cxx \
+	StdMeshers_SegmentAroundVertex_0D_i.cxx \
+	StdMeshers_SegmentLengthAroundVertex_i.cxx
 
 # additionnal information to compil and link file
 libStdMeshersEngine_la_CPPFLAGS = \