diff --git a/include/secp256k1_generator.h b/include/secp256k1_generator.h
index c2743a6e..5b5ee647 100644
--- a/include/secp256k1_generator.h
+++ b/include/secp256k1_generator.h
@@ -25,12 +25,12 @@ typedef struct {
  *
  *  Returns: 1 if input contains a valid generator.
  *  Args: ctx:      a secp256k1 context object.
- *  Out:  commit:   pointer to the output generator object
+ *  Out:  gen:      pointer to the output generator object
  *  In:   input:    pointer to a 33-byte serialized generator
  */
 SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_generator_parse(
     const secp256k1_context* ctx,
-    secp256k1_generator* commit,
+    secp256k1_generator* gen,
     const unsigned char *input
 ) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3);
 
@@ -39,12 +39,12 @@ SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_generator_parse(
  *  Returns: 1 always.
  *  Args:   ctx:        a secp256k1 context object.
  *  Out:    output:     a pointer to a 33-byte byte array
- *  In:     commit:     a pointer to a generator
+ *  In:     gen:        a pointer to a generator
  */
 SECP256K1_API int secp256k1_generator_serialize(
     const secp256k1_context* ctx,
     unsigned char *output,
-    const secp256k1_generator* commit
+    const secp256k1_generator* gen
 ) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3);
 
 /** Generate a generator for the curve.