diff --git a/src/api/data.c b/src/api/data.c
index c6ad547b..ab823b04 100644
--- a/src/api/data.c
+++ b/src/api/data.c
@@ -24,11 +24,15 @@ int l_lovrDataNewBlob(lua_State* L) {
   if (type == LUA_TNUMBER) {
     size = lua_tonumber(L, 1);
     data = calloc(1, size);
-  } else {
+  } else if (type == LUA_TSTRING) {
     const char* str = luaL_checklstring(L, 1, &size);
     data = malloc(size + 1);
     memcpy(data, str, size);
     data[size] = '\0';
+  } else {
+    Blob* blob = luax_checktypeof(L, 1, Blob);
+    size = blob->size;
+    data = malloc(size);
   }
   const char* name = luaL_optstring(L, 2, "");
   Blob* blob = lovrBlobCreate(data, size, name);