diff --git a/addons/misra.py b/addons/misra.py
index 5e0a73763..e3af4bcd0 100755
--- a/addons/misra.py
+++ b/addons/misra.py
@@ -841,11 +841,11 @@ class Define:
         self.args = []
         self.expansionList = ''
 
-        res = re.match(r'#define [A-Za-z0-9_]+\(([A-Za-z0-9_,]+)\)[ ]+(.*)', directive.str)
+        res = re.match(r'#define [A-Za-z0-9_]+\(([A-Za-z0-9_, ]+)\)[ ]+(.*)', directive.str)
         if res is None:
             return
 
-        self.args = res.group(1).split(',')
+        self.args = res.group(1).strip().split(',')
         self.expansionList = res.group(2)
 
     def __repr__(self):
diff --git a/addons/test/misra/misra-test.c b/addons/test/misra/misra-test.c
index 7ca1cc5ae..32eeb01e2 100644
--- a/addons/test/misra/misra-test.c
+++ b/addons/test/misra/misra-test.c
@@ -986,6 +986,7 @@ union misra_19_2 { }; // 19.2
 #define M_20_7_3(A)  ((A)+A) // 20.7
 #define M_20_7_4(A)  x##A // 20.10 this test was written to see there are not FPs
 #define M_20_7_5(A,B)  f(A, B) // no warning
+#define MUL(a  ,b ) ( a * b ) // 20.7
 
 #define M_20_10(a) (#a) // 20.10