Rule 10.5 cast of enum to boolean

[misra-c]

Code:

#include

typedef enum{ NOT_OK, OK, MAYBE } assessment;

void foo (assessment a)
{
  bool result;
  result = (bool) NOT_OK;    /* [1] compliant with MISRA C:2012 Rule 10.5? */
  /*. . . */
  result = (bool) a;         /* [2] not compliant with MISRA C:2012 Rule 10.5? */
  /*. . . */
}

The exception to Rule 10.5 permits a cast of an integer constant expression with the value 0 or 1 to a type which is defined as essentially Boolean. However the rule does not permit the cast of objects with essentially enum type to an essentially Boolean type.

Am I correct to say that [1] is compliant with rule 10.5, but [2] is not compliant?