diff --git a/addons/misra.py b/addons/misra.py
index 4ee33b739..dca73b665 100755
--- a/addons/misra.py
+++ b/addons/misra.py
@@ -625,10 +625,17 @@ def isBoolExpression(expr):
     return expr.str in ['!', '==', '!=', '<', '<=', '>', '>=', '&&', '||', '0', '1', 'true', 'false']
 
 
+def isEnumConstant(expr):
+    if not expr or not expr.values:
+        return False
+    values = expr.values
+    return len(values) == 1 and values[0].valueKind == 'known'
+
+
 def isConstantExpression(expr):
     if expr.isNumber:
         return True
-    if expr.isName:
+    if expr.isName and not isEnumConstant(expr):
         return False
     if simpleMatch(expr.previous, 'sizeof ('):
         return True
diff --git a/addons/test/misra/misra-test.c b/addons/test/misra/misra-test.c
index d7f6136b9..7e5a722ec 100644
--- a/addons/test/misra/misra-test.c
+++ b/addons/test/misra/misra-test.c
@@ -1009,11 +1009,17 @@ struct {
   uint8_t data_2[   ]; // 18.7
 } r18_7_struct;
 
+typedef enum {
+    R18_8_ENUM_CONSTANT_0,
+    R18_8_ENUM_CONSTANT_1,
+} r18_8_enum;
+
 void misra_18_8(int x) {
   int buf1[10];
   int buf2[sizeof(int)];
   int vla[x]; // 18.8
   static const unsigned char arr18_8_1[] = UNDEFINED_ID;
+  static uint32_t enum_test_0[R18_8_ENUM_CONSTANT_0] = {0};
 }
 
 union misra_19_2 { }; // 19.2