diff --git a/addons/misra-test.c b/addons/misra-test.c
index 400b648fa..3c07b70db 100644
--- a/addons/misra-test.c
+++ b/addons/misra-test.c
@@ -48,6 +48,7 @@ void misra_10_6(u8 x) {
 }
 
 void misra_10_8(u8 x) {
+  y = (u16)x;
   y = (u16)(x+x); // 10.8
 }
 
diff --git a/addons/misra.py b/addons/misra.py
index 6389de404..f78b59ad8 100644
--- a/addons/misra.py
+++ b/addons/misra.py
@@ -363,6 +363,8 @@ def misra_10_8(data):
             continue
         if not token.astOperand1.valueType or token.astOperand1.valueType.pointer>0:
             continue
+        if not token.astOperand1.astOperand1:
+            continue
         try:
             intTypes = ['char', 'short', 'int', 'long', 'long long']
             index1 = intTypes.index(token.valueType.type)