diff --git a/test_regress/driver.pl b/test_regress/driver.pl
index 283aaa41e..76f394231 100755
--- a/test_regress/driver.pl
+++ b/test_regress/driver.pl
@@ -2229,7 +2229,7 @@ sub files_identical {
                     && !/\+\+\+ \/tmp\//  # t_difftree.pl
             } @l1;
             @l1 = map {
-                s/(Internal Error: [^\n]+\.(cpp|h)):[0-9]+:/$1:#:/;
+                while (s/(Internal Error: [^\n]+\.(cpp|h)):[0-9]+/$1:#/g) {}
                 s/^-V\{t[0-9]+,[0-9]+\}/-V{t#,#}/;  # --vlt vs --vltmt run differences
                 $_;
             } @l1;
diff --git a/test_regress/t/t_func_tasknsvar_bad.out b/test_regress/t/t_func_tasknsvar_bad.out
index d4c3ed0ed..9fd20faba 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_varp && !m_varp->brokeExists()' @ ../V3AstNodes.cpp:72
+%Error: Internal Error: t/t_func_tasknsvar_bad.v:10:7: ../V3Broken.cpp:#: Broken link in node (or something without maybePointedTo): 'm_varp && !m_varp->brokeExists()' @ ../V3AstNodes.cpp:#
    10 |       sig = '1;
       |       ^~~
                         ... See the manual at https://verilator.org/verilator_doc.html for more assistance.