diff --git a/src/include/ngspice/Makefile.am b/src/include/ngspice/Makefile.am
index 5b6af544c..cbd2718ed 100644
--- a/src/include/ngspice/Makefile.am
+++ b/src/include/ngspice/Makefile.am
@@ -1,9 +1,10 @@
 ## Process this file with automake to produce Makefile.in
 
-nodist_pkginclude_HEADERS = \
-	config.h
+nodist_include_HEADERS = \
+	config.h	\
+	config.h.in
 
-pkginclude_HEADERS = \
+noinst_HEADERS = \
 	tclspice.h	\
 	acdefs.h	\
 	bdrydefs.h	\
@@ -129,4 +130,9 @@ pkginclude_HEADERS = \
 	wincolornames.h	\
 	wstdio.h
 
+if SHARED_MODULE
+pkginclude_HEADERS = \
+	sharedspice.h
+endif SHARED_MODULE
+
 MAINTAINERCLEANFILES = Makefile.in