diff --git a/utils/checkpackagelib/test_tool.py b/utils/checkpackagelib/test_tool.py
index 38029297a5..a0bf88001d 100644
--- a/utils/checkpackagelib/test_tool.py
+++ b/utils/checkpackagelib/test_tool.py
@@ -71,9 +71,9 @@ Shellcheck = [
      'empty.sh',
      '',
      ["dir/empty.sh:0: run 'shellcheck' and fix the warnings",
-      "In dir/empty.sh line 1:",
-      "^-- SC2148: Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.",
-      "For more information:",
+      "In dir/empty.sh line 1:\n"
+      "^-- SC2148: Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.\n"
+      "For more information:\n"
       "  https://www.shellcheck.net/wiki/SC2148 -- Tips depend on target shell and y..."]),
     ('sh shebang',
      'sh-shebang.sh',
@@ -87,21 +87,21 @@ Shellcheck = [
      'unused.sh',
      'unused=""',
      ["dir/unused.sh:0: run 'shellcheck' and fix the warnings",
-      "In dir/unused.sh line 1:",
-      'unused=""',
-      "^-- SC2148: Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.",
-      "^----^ SC2034: unused appears unused. Verify use (or export if used externally).",
-      "For more information:",
-      "  https://www.shellcheck.net/wiki/SC2148 -- Tips depend on target shell and y...",
+      "In dir/unused.sh line 1:\n"
+      'unused=""\n'
+      "^-- SC2148: Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.\n"
+      "^----^ SC2034: unused appears unused. Verify use (or export if used externally).\n"
+      "For more information:\n"
+      "  https://www.shellcheck.net/wiki/SC2148 -- Tips depend on target shell and y...\n"
       "  https://www.shellcheck.net/wiki/SC2034 -- unused appears unused. Verify use..."]),
     ('tab',
      'tab.sh',
      '\t#!/bin/sh',
      ["dir/tab.sh:0: run 'shellcheck' and fix the warnings",
-      "In dir/tab.sh line 1:",
-      '\t#!/bin/sh',
-      "^-- SC1114: Remove leading spaces before the shebang.",
-      "For more information:",
+      "In dir/tab.sh line 1:\n"
+      '\t#!/bin/sh\n'
+      "^-- SC1114: Remove leading spaces before the shebang.\n"
+      "For more information:\n"
       "  https://www.shellcheck.net/wiki/SC1114 -- Remove leading spaces before the ..."]),
     ]