diff --git a/pep-0418.txt b/pep-0418.txt
index 425f4a92d..760cfe4d0 100644
--- a/pep-0418.txt
+++ b/pep-0418.txt
@@ -214,7 +214,7 @@ The following keys are always present:
  * "function" (str): name of the underlying operating system function (ex:
    "QueryPerformanceCounter()" or "clock_gettime(CLOCK_REALTIME)")
  * "resolution" (float): resolution in seconds of the function
- * "monotonic" (bool): True if the clock is monotonic
+ * "is_monotonic" (bool): True if the clock is monotonic
 
 
 Hardware clocks