diff --git a/src/bin/dhcp4/tests/Makefile.am b/src/bin/dhcp4/tests/Makefile.am
index df7ac93a2b..a0856b21fd 100644
--- a/src/bin/dhcp4/tests/Makefile.am
+++ b/src/bin/dhcp4/tests/Makefile.am
@@ -26,6 +26,7 @@ AM_CPPFLAGS += -DINSTALL_PROG=\"$(abs_top_srcdir)/install-sh\"
 
 CLEANFILES = $(builddir)/interfaces.txt $(builddir)/logger_lockfile
 CLEANFILES += $(builddir)/load_marker.txt $(builddir)/unload_marker.txt
+CLEANFILES += $(builddir)/test_leases.csv.*
 CLEANFILES += *.json *.log
 
 DISTCLEANFILES = dhcp4_process_tests.sh
diff --git a/src/bin/dhcp6/tests/Makefile.am b/src/bin/dhcp6/tests/Makefile.am
index 58a518dbf3..87dc69dd88 100644
--- a/src/bin/dhcp6/tests/Makefile.am
+++ b/src/bin/dhcp6/tests/Makefile.am
@@ -27,6 +27,7 @@ AM_CPPFLAGS += -DINSTALL_PROG=\"$(abs_top_srcdir)/install-sh\"
 
 CLEANFILES  = $(builddir)/logger_lockfile
 CLEANFILES += $(builddir)/load_marker.txt $(builddir)/unload_marker.txt
+CLEANFILES += $(builddir)/test_leases.csv.*
 CLEANFILES += *.json *.log
 
 DISTCLEANFILES = dhcp6_process_tests.sh