diff --git a/src/romulus-m.ts b/src/romulus-m.ts
index 54f9446..ed7d45a 100644
--- a/src/romulus-m.ts
+++ b/src/romulus-m.ts
@@ -35,9 +35,9 @@ function parse (message: number[], blockLength: number): number[][] {
 
 /**
  * Pads the byte length of message to padLength. The final byte (when padded) contains the original message length.
- * @param message
- * @param padLength
- * @returns A complete 16 byte block.
+ * @param message The message to pad.
+ * @param padLength The length to pad the message to.
+ * @returns A padded block.
  */
 function pad (message: number[], padLength: number): number[] {
   // If there is no message, return a fully padded block.
@@ -63,7 +63,7 @@ function pad (message: number[], padLength: number): number[] {
 
 /**
  * Generate the key stream from the internal state by multiplying the state S and the constant matrix G.
- * @param state
+ * @param state The state from which the key stream will be generated.
  * @returns The key stream.
  */
 function g (state: number[]): number[] {