diff --git a/perf/Makefile.am b/perf/Makefile.am
index 7814be5ec..4701abf56 100644
--- a/perf/Makefile.am
+++ b/perf/Makefile.am
@@ -104,14 +104,14 @@ CLEANFILES = \
 check-valgrind perf-valgrind:
 	$(MAKE) $(AM_MAKEFLAGS) check \
 	    TESTS_ENVIRONMENT='$(TESTS_ENVIRONMENT) \
-	    $(top_srcdir)/libtool --mode=execute \
+	    $(top_builddir)/libtool --mode=execute \
 	    valgrind $(VALGRIND_MEMCHECK_FLAGS) $(EXTRA_VALGRIND_FLAGS)' \
 	    | tee valgrind-log
 
 perf-callgrind:
 	$(MAKE) $(AM_MAKEFLAGS) check \
 	    TESTS_ENVIRONMENT='$(TESTS_ENVIRONMENT) \
-	    $(top_srcdir)/libtool --mode=execute \
+	    $(top_builddir)/libtool --mode=execute \
 	    valgrind $(VALGRIND_CALLGRIND_FLAGS) $(EXTRA_VALGRIND_FLAGS)'
 
 .PHONY: perf html check-valgrind perf-valgrind perf-callgrind
diff --git a/test/Makefile.am b/test/Makefile.am
index 37855680e..114ae7840 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -578,7 +578,7 @@ clean-local:
 # Check tests under valgrind
 # Saves log to valgrind-log
 check-valgrind:
-	$(MAKE) $(AM_MAKEFLAGS) check TESTS_ENVIRONMENT='$(TESTS_ENVIRONMENT) $(top_srcdir)/libtool --mode=execute valgrind $(VALGRIND_FLAGS)' 2>&1 | tee valgrind-log
+	$(MAKE) $(AM_MAKEFLAGS) check TESTS_ENVIRONMENT='$(TESTS_ENVIRONMENT) $(top_builddir)/libtool --mode=execute valgrind $(VALGRIND_FLAGS)' 2>&1 | tee valgrind-log
 
 # The following definitions both should work.
 #FAILED_TESTS = `grep -l '\<FAIL\>' $(TESTS:=.log) 2>/dev/null | sed -e 's/[.]log$$//' | xargs echo`