diff --git a/vswitchd/automake.mk b/vswitchd/automake.mk
index c45d01dcbba..c44530264db 100644
--- a/vswitchd/automake.mk
+++ b/vswitchd/automake.mk
@@ -30,7 +30,7 @@ if HAVE_PYTHON
 if HAVE_DOT
 vswitchd/vswitch.gv: ovsdb/ovsdb-dot.in vswitchd/vswitch.ovsschema
 	$(OVSDB_DOT) --no-arrows $(srcdir)/vswitchd/vswitch.ovsschema > $@
-vswitchd/vswitch.pic: vswitchd/vswitch.gv ovsdb/dot2pic
+vswitchd/vswitch.pic: vswitchd/vswitch.gv $(srcdir)/ovsdb/dot2pic
 	(dot -T plain < vswitchd/vswitch.gv | $(srcdir)/ovsdb/dot2pic -f 3) > $@;
 VSWITCH_PIC = vswitchd/vswitch.pic
 VSWITCH_DOT_DIAGRAM_ARG = --er-diagram=$(VSWITCH_PIC)
diff --git a/vtep/automake.mk b/vtep/automake.mk
index f06148a40b0..0a3a078fdb1 100644
--- a/vtep/automake.mk
+++ b/vtep/automake.mk
@@ -33,7 +33,7 @@ if HAVE_PYTHON
 if HAVE_DOT
 vtep/vtep.gv: ovsdb/ovsdb-dot.in vtep/vtep.ovsschema
 	$(OVSDB_DOT) --no-arrows $(srcdir)/vtep/vtep.ovsschema > $@
-vtep/vtep.pic: vtep/vtep.gv ovsdb/dot2pic
+vtep/vtep.pic: vtep/vtep.gv $(srcdir)/ovsdb/dot2pic
 	(dot -T plain < vtep/vtep.gv | $(srcdir)/ovsdb/dot2pic -f 3) > $@;
 VTEP_PIC = vtep/vtep.pic
 VTEP_DOT_DIAGRAM_ARG = --er-diagram=$(VTEP_PIC)