--- a/Makefile.in	2017-12-04 20:09:23.730805855 +0100
+++ b/Makefile.in	2017-12-04 20:09:51.586331155 +0100
@@ -62,7 +62,8 @@
 
 # Rebuild the tests (and not the XML/Ada code itself)
 test: force
+	GPR_PROJECT_PATH=schema:input_sources:dom:sax:unicode \
 	${GPRBUILD} -p -XLIBRARY_TYPE=static ${GPROPTS} \
 		-XTESTS_ACTIVATED=Only xmlada.gpr
 
 # Run the tests. This requires an install of XML/Ada first
--- a/tests/Makefile	2017-12-04 21:38:29.722818904 +0100
+++ b/tests/Makefile	2017-12-04 21:38:54.229382658 +0100
@@ -1,8 +1,6 @@
 TESTS= test_unicode \
 		 test_state \
-		 test_xml \
 		 test_adacore_dom \
-		 test_schema \
 		 test_date_time \
 		 test_numbers \
 		 test_adacore_schema \
@@ -71,6 +71,7 @@
 test_multiple_xsd:
 	@echo "multiple xsd"
 	@cd schema/multiple_xsd; \
+		GPR_PROJECT_PATH=../../../distrib:../../../input_sources:../../../dom:../../../sax:../../../schema:../../../unicode \
 		gprbuild -q -Pdefault.gpr; \
 		./validate > $(RESULTS)/multiple_xsd.out; \
 		cp $(RESULTS)/multiple_xsd.out $(RESULTS)/multiple_xsd.diff; \