diff --git a/src/V3Ast.h b/src/V3Ast.h
index 1bceac0b6..9f8d12b91 100644
--- a/src/V3Ast.h
+++ b/src/V3Ast.h
@@ -50,7 +50,7 @@ using MTaskIdSet = std::set<int>;  // Set of mtaskIds for Var sorting
 // For broken() function, return error string if have a match
 #define BROKEN_RTN(test) \
     do { \
-        if (VL_UNCOVERABLE(test)) return #test; \
+        if (VL_UNCOVERABLE(test)) return "'" #test "' @ " __FILE__ ":" VL_STRINGIFY(__LINE__); \
     } while (false)
 // For broken() function, return error string if a base of this class has a match
 #define BROKEN_BASE_RTN(test) \
diff --git a/test_regress/t/t_func_tasknsvar_bad.out b/test_regress/t/t_func_tasknsvar_bad.out
index b2338cb62..723df5dc4 100644
--- a/test_regress/t/t_func_tasknsvar_bad.out
+++ b/test_regress/t/t_func_tasknsvar_bad.out
@@ -2,7 +2,7 @@
    16 |       foo(bus_we_select_from[2]);   
       |                             ^
                   ... For error description see https://verilator.org/warn/TASKNSVAR?v=latest
-%Error: Internal Error: t/t_func_tasknsvar_bad.v:10:7: ../V3Broken.cpp:#: Broken link in node (or something without maybePointedTo): m_varScopep && !m_varScopep->brokeExists()
+%Error: Internal Error: t/t_func_tasknsvar_bad.v:10:7: ../V3Broken.cpp:#: Broken link in node (or something without maybePointedTo): 'm_varScopep && !m_varScopep->brokeExists()' @ ../V3AstNodes.cpp:51
    10 |       sig = '1;
       |       ^~~
                         ... See the manual at https://verilator.org/verilator_doc.html for more assistance.