diff --git a/doc/salome/examples/Makefile.am b/doc/salome/examples/Makefile.am
index 10fa6cba4..eb1d0eb80 100644
--- a/doc/salome/examples/Makefile.am
+++ b/doc/salome/examples/Makefile.am
@@ -137,5 +137,5 @@ EXTRA_DIST += $(pyexamples_SCRIPTS) testme.py
 
 installcheck-local:
 	@for f in $(GOOD_TESTS) ; do \
-	  python $(top_srcdir)/doc/salome/examples/testme.py $(top_srcdir)/doc/salome/examples/$$f || exit 1; \
+	  env GEOM_ROOT_DIR=$(prefix) python $(top_srcdir)/doc/salome/examples/testme.py $(top_srcdir)/doc/salome/examples/$$f || exit 1; \
 	done