diff --git a/addons/misra.py b/addons/misra.py
index a48629b986f..14a17703596 100755
--- a/addons/misra.py
+++ b/addons/misra.py
@@ -2291,10 +2291,9 @@ def get_category(essential_type):
                 rhs_category = get_category(rhs)
                 if lhs_category and rhs_category and lhs_category != rhs_category and rhs_category not in ('signed','unsigned'):
                     self.reportError(tok, 10, 3)
-                if bitsOfEssentialType(lhs) < bitsOfEssentialType(rhs):
+                if bitsOfEssentialType(lhs) < bitsOfEssentialType(rhs) and (lhs != "bool" or tok.astOperand2.str not in ('0','1')):
                     self.reportError(tok, 10, 3)
 
-
     def misra_10_4(self, data):
         op = {'+', '-', '*', '/', '%', '&', '|', '^', '+=', '-=', ':'}
         for token in data.tokenlist:
diff --git a/addons/test/misra/misra-test.c b/addons/test/misra/misra-test.c
index 2afa7b8cfec..da9243cf0b7 100644
--- a/addons/test/misra/misra-test.c
+++ b/addons/test/misra/misra-test.c
@@ -712,6 +712,7 @@ static void misra_10_3(uint32_t u32a, uint32_t u32b) {
     res = 2U + 3U; // no warning, utlr=unsigned char
     res = 0.1f; // 10.3
     const char c = '0'; // no-warning
+    bool b = true; // no-warning
     uint32_t u = UINT32_C(10); // no-warning
 }