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-rw-r--r--src/script/lua_api/l_env.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/script/lua_api/l_env.cpp b/src/script/lua_api/l_env.cpp
index ee49fd6bd..b26c89e7d 100644
--- a/src/script/lua_api/l_env.cpp
+++ b/src/script/lua_api/l_env.cpp
@@ -1219,7 +1219,8 @@ int ModApiEnvMod::l_emerge_area(lua_State *L)
sortBoxVerticies(bpmin, bpmax);
size_t num_blocks = VoxelArea(bpmin, bpmax).getVolume();
- assert(num_blocks != 0);
+ if (num_blocks == 0)
+ return 0;
if (lua_isfunction(L, 3)) {
callback = LuaEmergeAreaCallback;