diff --git a/lldb/source/Commands/CommandObjectExpression.cpp b/lldb/source/Commands/CommandObjectExpression.cpp
index 178ca53..7f7c780 100644
--- a/lldb/source/Commands/CommandObjectExpression.cpp
+++ b/lldb/source/Commands/CommandObjectExpression.cpp
@@ -233,7 +233,12 @@
         m_exe_ctx.process->SetDynamicCheckers(dynamic_checkers);
     }
     
-    lldb::ValueObjectSP result_valobj_sp (ClangUserExpression::Evaluate (m_exe_ctx, expr));
+    const char *prefix = NULL;
+    
+    if (m_exe_ctx.target)
+        prefix = m_exe_ctx.target->GetExpressionPrefixContentsAsCString();
+    
+    lldb::ValueObjectSP result_valobj_sp (ClangUserExpression::Evaluate (m_exe_ctx, expr, prefix));
     assert (result_valobj_sp.get());
     if (result_valobj_sp->GetError().Success())
     {