It appears Kim Kardashian and Kourtney Kardashian are still not in good terms that they have to fight about the littlest of things -- for example, candies.

In a clip of "Keeping Up with the Kardashians" Sunday's episode, sisters Kim and Khloe heated the atmosphere again and argued over the treats to be served for their daughters' double birthday bash.

They decided to hold a Candy Land-themed party for North West and Penelope Disick, but they failed to find a middle ground while planning.

Kourtney is known for her healthy lifestyle and diet plans. Since she is "too health-conscious", she wanted the party to be health-friendly by suggesting to have organic alternatives instead.

"It's Candy Land, Kourtney. It's not going to be healthy," Kim responded.

The 40-year-old mom remained unbothered by the KKW mogul's statement and pushed her idea more.

Kourtney strongly suggested that since the party is not going to be healthy as "sugars are never really healthy," they should instead choose those that does not have food colorings and other gross ingredients.

Kim, who already looked so pissed about her sister's persistence, asked for an example of the candy Kourtney kept on talking about, to which the elder sister failed to give a reply since she still needs to look into it.

Kourtney lives with the vision of "no sugar, no disgusting chemicals," as described by Kim. Annoyed, the latter eventually called their kids' party as a fun-free zone because of the non-sense plans of Kourtney, which were far from what North and Penelope wanted.

Kourtney continued to frustrate Kim when she mentioned that the unhealthy party would contradict her " healthy brand."

"Why does your car have leather seats? Why are you wearing plastic glasses?" Kim slammed her sister who kept on pushing her unfair decisions.

Kourtney, later on, admitted that she could not believe that Kim did not compromise at all and that she did not feel guilty not only for their daughters but also for the kids joining the party.

"It's such a dated vibe to be like that," Penelope's mom said.

After the exchange of contrasting suggestions, the two finally ended the argument with Kim saying that she wanted the candies no matter what.

"Well, that's your problem," Kourtney blurted.

In the end, fans discovered that the two finally agreed on giving the kids what they wanted. The two co-hosted the Candy Land-themed party for North and Penelope, who wore coordinating colorful outfits. The treats made them even happier!

READ MORE: Feud Not Over? Kim Kardashian Embarrasses Kourtney Kardashian During People's Choice Awards 2019