diff --git a/src/hnf.ts b/src/hnf.ts
index 4e4a686..1de8ead 100644
--- a/src/hnf.ts
+++ b/src/hnf.ts
@@ -163,7 +163,7 @@ export function hnf<T extends number | bigint>(A: T[][]): T[][] {
 
 /**
  * Prune rows filled with falsy values from a 2-D matrix.
- * @param A: Matrix to prune in-place.
+ * @param A Matrix to prune in-place.
  */
 export function pruneZeroRows(A: any[][]) {
   for (let i = 0; i < A.length; ++i) {