diff --git a/tests/vshtabletest.c b/tests/vshtabletest.c
index 2b997753ff..83d7f9b5ab 100644
--- a/tests/vshtabletest.c
+++ b/tests/vshtabletest.c
@@ -33,7 +33,7 @@
 static int
 testVshTableNew(const void *opaque G_GNUC_UNUSED)
 {
-    g_autoptr(vshTable) table = vshTableNew(NULL);
+    g_autoptr(vshTable) table = vshTableNew(NULL, NULL);
 
     if (table) {
         fprintf(stderr, "expected failure when passing null to vshTableNew\n");
@@ -85,7 +85,7 @@ testVshTableRowAppend(const void *opaque G_GNUC_UNUSED)
     if (!table)
         return -1;
 
-    if (vshTableRowAppend(table, NULL) >= 0) {
+    if (vshTableRowAppend(table, NULL, NULL) >= 0) {
         fprintf(stderr, "Appending NULL shouldn't work\n");
         return -1;
     }
diff --git a/tools/vsh-table.h b/tools/vsh-table.h
index df647e3ba9..18d5139aa6 100644
--- a/tools/vsh-table.h
+++ b/tools/vsh-table.h
@@ -29,10 +29,12 @@ vshTableFree(vshTable *table);
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(vshTable, vshTableFree);
 
 vshTable *
-vshTableNew(const char *format, ...);
+vshTableNew(const char *format, ...)
+    G_GNUC_NULL_TERMINATED;
 
 int
-vshTableRowAppend(vshTable *table, const char *arg, ...);
+vshTableRowAppend(vshTable *table, const char *arg, ...)
+    G_GNUC_NULL_TERMINATED;
 
 void
 vshTablePrintToStdout(vshTable *table, vshControl *ctl);