diff --git a/llvm/lib/MC/WasmObjectWriter.cpp b/llvm/lib/MC/WasmObjectWriter.cpp
index cbbe161..f9318ad 100644
--- a/llvm/lib/MC/WasmObjectWriter.cpp
+++ b/llvm/lib/MC/WasmObjectWriter.cpp
@@ -635,10 +635,12 @@
         llvm_unreachable("The fill should be an assembler constant");
       DataBytes.insert(DataBytes.end(), Fill->getValueSize() * NumValues,
                        Fill->getValue());
+    } else if (auto *LEB = dyn_cast<MCLEBFragment>(&Frag)) {
+      const SmallVectorImpl<char> &Contents = LEB->getContents();
+      DataBytes.insert(DataBytes.end(), Contents.begin(), Contents.end());
     } else {
       const auto &DataFrag = cast<MCDataFragment>(Frag);
       const SmallVectorImpl<char> &Contents = DataFrag.getContents();
-
       DataBytes.insert(DataBytes.end(), Contents.begin(), Contents.end());
     }
   }