diff --git a/main.cpp b/main.cpp
index c3bc40b..ca6a6be 100644
--- a/main.cpp
+++ b/main.cpp
@@ -15,6 +15,7 @@ void test_basics(amap mapdo, void *map) {
 
 	/* Delete / tombstone */
 	assert(NULL != mapdo(map, AMAP_SET, "meaning", NULL));
+	assert(NULL == (int *)mapdo(map, AMAP_GET, "meaning", NULL));
 
 	/* Check re-adding */
 	assert(NULL != mapdo(map, AMAP_SET, "meaning", &i));