diff --git a/src/AIModel/Makefile.am b/src/AIModel/Makefile.am
index 350d69ee1..c5520fba5 100644
--- a/src/AIModel/Makefile.am
+++ b/src/AIModel/Makefile.am
@@ -3,7 +3,7 @@ noinst_LIBRARIES = libAIModel.a
 libAIModel_a_SOURCES = submodel.cxx submodel.hxx 	\
 			AIManager.hxx AIManager.cxx \
 			AIBase.hxx AIBase.cxx 	\
-			AIModelData.cxx \
+			AIModelData.cxx AIModelData.hxx \
 			AIAircraft.hxx AIAircraft.cxx \
 			AIMultiplayer.hxx AIMultiplayer.cxx \
 			AIShip.hxx AIShip.cxx \
diff --git a/src/FDM/JSBSim/input_output/Makefile.am b/src/FDM/JSBSim/input_output/Makefile.am
index 5c53240a6..02f782d34 100644
--- a/src/FDM/JSBSim/input_output/Makefile.am
+++ b/src/FDM/JSBSim/input_output/Makefile.am
@@ -2,6 +2,6 @@ noinst_LIBRARIES = libInputOutput.a
 
 libInputOutput_a_SOURCES = FGGroundCallback.cpp FGPropertyManager.cpp FGScript.cpp FGXMLElement.cpp FGXMLParse.cpp FGfdmSocket.cpp
 
-noinst_HEADERS = FGGroundCallback.h FGPropertyManager.h FGScript.h FGXMLElement.h FGXMLParse.h FGfdmSocket.h FGXMLFileRead.h
+noinst_HEADERS = FGGroundCallback.h FGPropertyManager.h FGScript.h FGXMLElement.h FGXMLParse.h FGfdmSocket.h FGXMLFileRead.h net_fdm.hxx
 
 INCLUDES = -I$(top_srcdir)/src/FDM/JSBSim