diff --git a/lldb/source/Commands/CommandObjectMemory.cpp b/lldb/source/Commands/CommandObjectMemory.cpp
index 1760c1d..7152230 100644
--- a/lldb/source/Commands/CommandObjectMemory.cpp
+++ b/lldb/source/Commands/CommandObjectMemory.cpp
@@ -1108,6 +1108,7 @@
             case eFormatAddressInfo:
             case eFormatHexFloat:
             case eFormatInstruction:
+            case eFormatVoid:
                 result.AppendError("unsupported format for writing memory");
                 result.SetStatus(eReturnStatusFailed);
                 return false;