The south peak of Kebnekaise was once the country's highest point but part of the glacier that covered it has melted away.
Now, the northern peak, standing at 2,097 meters, is the highest summit.
Per Holmlund, a glaciologist at Stockholm University, has been measuring Kebnekaise's peak since the 1980s. For nearly a decade, scientists have expected the southern tip to shrink below the northern one but it was Holmlund's calculation on Sunday that finally showed it had happened.
"It's the same pattern we can see on all other glaciers here in the surroundings," he tells Radio Sweden. "For the last 20 years, they have been shrinking. And this south summit is an ice summit and it has responded in exactly the same way."
Images show Sweden's glaciers melting away1:14 min 1:14 min
Sherpas help make Sweden’s highest mountain trail safer1:16 min 1:16 min