Simple dice game ..or boolean operator not working right

I'm making a simple roll the dice game that displays your the winner if you roll a 7 or 11.
But my 'OR' operator doesn't seem to be working.
It always displays your the winner regardless the roll of the dice.
If I remove the || and 11 it works fine.
This is kinda driving me nuts, it should be real simple

Code:

#include <stdio.h>
#include <ctype.h>
#include <time.h>
#include <stdlib.h>


int main(int argc, char** argv)
{	
	int dice_1 = 0;
	int dice_2 = 0;
	int rollDice = 0;
	time_t t;
	srand(time(&t));
	
		
	dice_1 = (rand() % 6) + 1;
	dice_2 = (rand() % 6) + 1;
	rollDice = dice_1 + dice_2;
	
	if (rollDice == 7 || 11){
	printf("You lucky bastard! You rolled a %d\n", rollDice);
	}
	else {
	printf("Your roll was %d ,you lose try agian.\n", rollDice);
	}
		
	
	
	return 0;
}

if(rollDice == 7 || rollDice == 11)

DOH!

I new it was something simple.
thanks.