diff --git a/tests/misra/.gitignore b/tests/misra/.gitignore
index fc9ac228cb0..4e6a1f2909c 100644
--- a/tests/misra/.gitignore
+++ b/tests/misra/.gitignore
@@ -1,5 +1,3 @@
 *.pdf
-*.txt
 .output.log
-new_table
 cppcheck/
diff --git a/tests/misra/suppressions.txt b/tests/misra/suppressions.txt
index 5c0b953b510..4b79e109f5d 100644
--- a/tests/misra/suppressions.txt
+++ b/tests/misra/suppressions.txt
@@ -13,7 +13,7 @@ misra-c2012-20.10
 unmatchedSuppression
 
 # All interrupt handlers are defined, including ones we don't use
-unusedFunction:*/interrupt_handlers*.h
+unusedFunction:*/interrupt_handlers.h
 
 # all of the below suppressions are from new checks introduced after updating
 # cppcheck from 2.5 -> 2.13. they are listed here to separate the update from
diff --git a/tests/misra/test_mutation.py b/tests/misra/test_mutation.py
index 066ba9ec98f..abcd1d3b7a9 100755
--- a/tests/misra/test_mutation.py
+++ b/tests/misra/test_mutation.py
@@ -17,6 +17,10 @@
   'board/stm32f4/inc',
   'board/fake_stm.h',
 
+  # suppresed
+  'board/stm32f4/interrupt_handlers.h',
+  'board/stm32h7/interrupt_handlers.h',
+
   # bootstub only files
   'board/flasher.h',
   'board/bootstub.c',