diff --git a/src/content/ContentLUT.cpp b/src/content/ContentLUT.cpp
index 8536ffb7..7a0d6eb8 100644
--- a/src/content/ContentLUT.cpp
+++ b/src/content/ContentLUT.cpp
@@ -19,8 +19,14 @@ ContentLUT::ContentLUT(size_t blocksCount, const Content* content) {
     ContentIndices* indices = content->indices;
     for (size_t i = 0; i < blocksCount; i++) {
         blocks.push_back(i);
+    }
+    for (size_t i = 0; i < indices->countBlockDefs(); i++) {
         blockNames.push_back(indices->getBlockDef(i)->name);
     }
+
+        for (size_t i = indices->countBlockDefs(); i < blocksCount; i++) {
+        blockNames.push_back("");
+    }
 }
 
 ContentLUT* ContentLUT::create(const path& filename,