diff --git a/src/asset.cpp b/src/asset.cpp
index af21bd6..06e5b94 100644
--- a/src/asset.cpp
+++ b/src/asset.cpp
@@ -70,12 +70,11 @@ arenaAllocateBlock(memory_arena* arena, size_t block_size)
 	return ret;
 }
 
-#define MAX_NAME_LENGTH 256
 char*
-arenaCopyCStr(memory_arena* arena, const char* input)
+arenaCopyCStr(memory_arena* arena, const char* input, u32 max_len)
 {
 	u32 name_len = std::strlen(input) + 1;
-	assert(name_len < MAX_NAME_LENGTH);
+	assert(name_len < max_len);
 	// TODO: make an arena alloc macro
 	char* out = (char*) arenaAllocateBlock(arena, name_len);
 	std::strncpy(out, input, name_len);
@@ -207,10 +206,7 @@ initModel(Assets* assets,
 	uint buf_count = t_mdl.bufferViews.size();
 	mdl->meshes = (mesh*) arenaAllocateBlock(arena, buf_count * sizeof(mesh));
 	mdl->num_meshes = t_mdl.meshes.size();
-	uint name_len = std::strlen(filename);
-	assert(name_len < MAX_PATH_SIZE);
-	mdl->filepath = (char*) arenaAllocateBlock(arena, name_len + 1);
-	std::strncpy(mdl->filepath, filename, name_len);
+	mdl->filepath = arenaCopyCStr(arena, filename, MAX_PATH_SIZE);
 	mdl->filepath_hash = utilFNV64a_str(mdl->filepath);
 
 	return mdl;
diff --git a/src/asset.h b/src/asset.h
index 9a9cf1a..74646ac 100644
--- a/src/asset.h
+++ b/src/asset.h
@@ -35,7 +35,10 @@ uint arenaGetFreeSize(memory_arena* arena);
 
 void* arenaAllocateBlock(memory_arena* arena, size_t block_size);
 
-char* arenaCopyCStr(memory_arena* arena, const char* input);
+#define MAX_NAME_LENGTH 256
+char* arenaCopyCStr(memory_arena* arena,
+	const char* input,
+	u32 max_len = MAX_NAME_LENGTH);
 
 // NOTE: wrapper for stb_image
 struct util_image