diff --git a/src/g_level.cpp b/src/g_level.cpp
index 8934ab3c20..187c7b1aac 100644
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@@ -1867,6 +1867,7 @@ CCMD(listmaps)
 		{
 			Printf("%s: '%s' (%s)\n", info->mapname, info->LookupLevelName().GetChars(),
 				Wads.GetWadName(Wads.GetLumpFile(map->lumpnum)));
+			delete map;
 		}
 	}
 }