diff --git a/lldb/packages/Python/lldbsuite/test/commands/expression/dont_allow_jit/TestAllowJIT.py b/lldb/packages/Python/lldbsuite/test/commands/expression/dont_allow_jit/TestAllowJIT.py
--- a/lldb/packages/Python/lldbsuite/test/commands/expression/dont_allow_jit/TestAllowJIT.py
+++ b/lldb/packages/Python/lldbsuite/test/commands/expression/dont_allow_jit/TestAllowJIT.py
@@ -35,7 +35,7 @@
                                    "Set a breakpoint here", self.main_source_file)
 
         frame = thread.GetFrameAtIndex(0)
-        
+
         # First make sure we can call the function with 
         interp = self.dbg.GetCommandInterpreter()
         self.expect("expr --allow-jit 1 -- call_me(10)",
@@ -43,8 +43,8 @@
         # Now make sure it fails with the "can't IR interpret message" if allow-jit is false:
         self.expect("expr --allow-jit 0 -- call_me(10)",
                     error=True,
-                    substrs = ["Can't run the expression locally"])
-        
+                    substrs = ["Can't interpret the expression without a running target"])
+
     def expr_options_test(self):
         (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(self,
                                    "Set a breakpoint here", self.main_source_file)
@@ -69,7 +69,7 @@
         # Again use it and ensure we fail:
         result = frame.EvaluateExpression("call_me(10)", options)
         self.assertTrue(result.GetError().Fail(), "expression failed with no JIT")
-        self.assertTrue("Can't run the expression locally" in result.GetError().GetCString(), "Got right error")
+        self.assertTrue("Can't interpret the expression without a running target" in result.GetError().GetCString(), "Got right error")
 
         # Finally set the allow JIT value back to true and make sure that works:
         options.SetAllowJIT(True)
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
@@ -1258,8 +1258,10 @@
           interpret_error, interpret_function_calls);
 
       if (!can_interpret && execution_policy == eExecutionPolicyNever) {
-        err.SetErrorStringWithFormat("Can't run the expression locally: %s",
-                                     interpret_error.AsCString());
+        err.SetErrorStringWithFormat(
+            "Can't interpret the expression without a running target. "
+            "Interpretation failed due to: %s",
+            interpret_error.AsCString());
         return err;
       }
     }