diff --git a/year25/day12/day.go b/year25/day12/day.go
index 274eb1c..ed16ba3 100644
--- a/year25/day12/day.go
+++ b/year25/day12/day.go
@@ -107,11 +107,11 @@ func parseInput(ctx aoc.Context) (input Input, err error) {
 		var region Region
 		parts := strings.Split(regionStr, ": ")
 		for _, idstr := range strings.Split(parts[1], " ") {
-			id, err := strconv.Atoi(idstr)
+			count, err := strconv.Atoi(idstr)
 			if err != nil {
-				return input, fmt.Errorf("day12: failed to parse region id: %w", err)
+				return input, fmt.Errorf("day12: failed to parse region count: %w", err)
 			}
-			region.ShapeCounts = append(region.ShapeCounts, id)
+			region.ShapeCounts = append(region.ShapeCounts, count)
 		}
 
 		parts2 := strings.Split(parts[0], "x")