diff --git a/.github/workflows/CI-cygwin.yml b/.github/workflows/CI-cygwin.yml
index 7b8881448..c0ac55709 100644
--- a/.github/workflows/CI-cygwin.yml
+++ b/.github/workflows/CI-cygwin.yml
@@ -43,7 +43,7 @@ jobs:
       - name: Extra test for misra
         run: |
           C:\tools\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE%\addons\test
-          ..\..\cppcheck --dump --suppress=uninitvar --inline-suppr misra\misra-test.c --std=c89 && python3 ..\misra.py -verify misra\misra-test.c.dump
+          ..\..\cppcheck --dump --suppress=uninitvar --inline-suppr misra\misra-test.c --std=c89 --platform=unix64 && python3 ..\misra.py -verify misra\misra-test.c.dump
           C:\tools\cygwin\bin\bash.exe -l -c cd %GITHUB_WORKSPACE%
           .\cppcheck --addon=misra --inline-suppr --enable=information --error-exitcode=1 addons\test\misra\misra-ctu-*-test.c
 
diff --git a/.github/workflows/CI-unixish.yml b/.github/workflows/CI-unixish.yml
index e9469bf28..96b97179b 100644
--- a/.github/workflows/CI-unixish.yml
+++ b/.github/workflows/CI-unixish.yml
@@ -127,7 +127,7 @@ jobs:
           ./cppcheck --addon=threadsafety --std=c++03 addons/test/threadsafety
           ./cppcheck --addon=misra --inline-suppr --enable=information --error-exitcode=1 addons/test/misra/misra-ctu-*-test.c
           cd addons/test
-          ../../cppcheck --dump --suppress=uninitvar --inline-suppr misra/misra-test.c --std=c89 && python3 ../misra.py -verify misra/misra-test.c.dump
+          ../../cppcheck --dump --suppress=uninitvar --inline-suppr misra/misra-test.c --std=c89 --platform=unix64 && python3 ../misra.py -verify misra/misra-test.c.dump
 
       - name: Build GUI on ubuntu
         if: contains(matrix.os, 'ubuntu')
diff --git a/.github/workflows/CI-windows.yml b/.github/workflows/CI-windows.yml
index 2fca75314..4abd0dfcf 100644
--- a/.github/workflows/CI-windows.yml
+++ b/.github/workflows/CI-windows.yml
@@ -137,5 +137,5 @@ jobs:
         run: |
           .\cppcheck.exe --addon=misra --inline-suppr --enable=information --error-exitcode=1 addons\test\misra\misra-ctu-*-test.c
           cd addons\test
-          ..\..\cppcheck.exe --dump --suppress=uninitvar --inline-suppr misra\misra-test.c --std=c89 && python3 ..\misra.py -verify misra\misra-test.c.dump
+          ..\..\cppcheck.exe --dump --suppress=uninitvar --inline-suppr misra\misra-test.c --std=c89 --platform=unix64 && python3 ..\misra.py -verify misra\misra-test.c.dump
 
diff --git a/addons/test/misra/misra-test.c b/addons/test/misra/misra-test.c
index bfcd34580..e8a2f4c39 100644
--- a/addons/test/misra/misra-test.c
+++ b/addons/test/misra/misra-test.c
@@ -1,6 +1,6 @@
 // To test:
 // ~/cppcheck/cppcheck --dump misra/misra-test.h --std=c89
-// ~/cppcheck/cppcheck --dump --suppress=uninitvar --inline-suppr misra/misra-test.c --std=c89 && python3 ../misra.py -verify misra/misra-test.c.dump
+// ~/cppcheck/cppcheck --dump --suppress=uninitvar --inline-suppr misra/misra-test.c --std=c89 --platform=unix64 && python3 ../misra.py -verify misra/misra-test.c.dump
 
 #include "path\file.h" // 20.2
 #include "file//.h" // 20.2