diff --git a/process.c b/process.c
index 0fb727db8af9f8..2871596ceae14f 100644
--- a/process.c
+++ b/process.c
@@ -8227,7 +8227,7 @@ ruby_real_ms_time(void)
  *  - +:microsecond+: Number of microseconds as an integer.
  *  - +:millisecond+: Number of milliseconds as an integer.
  *  - +:nanosecond+: Number of nanoseconds as an integer.
- *  - +::second+: Number of seconds as an integer.
+ *  - +:second+: Number of seconds as an integer.
  *
  *  Examples:
  *