diff --git a/.github/workflows/scriptcheck.yml b/.github/workflows/scriptcheck.yml
index 13b87c37f..6ef6d90ee 100644
--- a/.github/workflows/scriptcheck.yml
+++ b/.github/workflows/scriptcheck.yml
@@ -37,12 +37,11 @@ jobs:
 
     needs: build
     # 'ubuntu-22.04' removes Python 2.7, 3.5 and 3.6 so keep the previous LTS version
+    # 'ubutunu-20.04' no longer works on 2.7 - TODO: re-added in a different way or remove support for it?
     runs-on: ubuntu-20.04
-        container:
-            image: python:2.7.18-buster
     strategy:
       matrix:
-        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9, '3.10', '3.11']
+        python-version: [3.5, 3.6, 3.7, 3.8, 3.9, '3.10', '3.11']
       fail-fast: false
 
     steps:
diff --git a/addons/misra_9.py b/addons/misra_9.py
index 02940c440..f0f733719 100644
--- a/addons/misra_9.py
+++ b/addons/misra_9.py
@@ -418,7 +418,7 @@ def misra_9_x(self, data, rule, rawTokens = None):
                                 has_var = True
                                 continue
                             unknown_constant = True
-                            cppcheckdata.reportError(sz, 'error', f'Unknown constant {t.str}, please review configuration', 'misra', 'config')
+                            cppcheckdata.reportError(sz, 'error', 'Unknown constant {}, please review configuration'.format(t.str), 'misra', 'config')
                             has_config_errors = True
                         if t.isArithmeticalOp:
                             tokens += [t.astOperand1, t.astOperand2]