diff --git a/lasso/xml/Makefile.am b/lasso/xml/Makefile.am
index 162c437d..884d520d 100644
--- a/lasso/xml/Makefile.am
+++ b/lasso/xml/Makefile.am
@@ -243,6 +243,7 @@ liblassoinclude_HEADERS = \
 	samlp_status_code.h \
 	xml_enc.h \
 	tools.h \
+	xmlsec_soap.h \
 	$(WSF_H_FILES)
 
 lasso_private_h_sources = \