diff --git a/Makefile.am b/Makefile.am
index 14312cb79865091563e78212910ec4db645c417a..baf7cfea4c6f9bd7134af7dbb72e8e6bf6937f63 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -23,7 +23,7 @@ endif
 TESTSUITE_BIN = $(top_srcdir)/src/testsuite/testsuite
 
 if TESTSUITE_VALGRIND
-TEST_BIN = valgrind -q --error-exitcode=1 --leak-check=full $(TESTSUITE_BIN) 
+TEST_BIN = valgrind -q --error-exitcode=1 --show-reachable=yes --leak-check=full $(TESTSUITE_BIN) 
 else
 TEST_BIN = $(TESTSUITE_BIN)
 endif