diff --git a/lisa/analysis/latency.py b/lisa/analysis/latency.py
index d5b891c371b3eba00b7f3207c86d4caa54987031..1d73a61d8ab44d7cfc4815cfb37a7bdf50e4d59c 100644
--- a/lisa/analysis/latency.py
+++ b/lisa/analysis/latency.py
@@ -65,7 +65,7 @@ class LatencyAnalysis(TraceAnalysisBase):
         :returns: a :class:`pandas.DataFrame` with:
 
           * A ``wakeup_latency`` column (the wakeup latency at that timestamp)
-          * A ``cpu`` column (the CPU where the task was on)
+          * A ``cpu`` column (the CPU where the event took place)
           * A ``target_cpu`` column (the CPU where the task has been scheduled)
         """
         return self._df_latency(
@@ -86,7 +86,7 @@ class LatencyAnalysis(TraceAnalysisBase):
         :returns: a :class:`pandas.DataFrame` with:
 
           * A ``preempt_latency`` column (the preemption latency at that timestamp)
-          * A ``cpu`` column (the CPU where the task was on)
+          * A ``cpu`` column (the CPU where the event took place)
         """
         return self._df_latency(
             task,
diff --git a/lisa/analysis/tasks.py b/lisa/analysis/tasks.py
index 7ce3aeed1aadecd2fb97506f4ef06405cee5fcaa..64ecc006ecc746f78bfd7e65d683f94eac1b2cbf 100644
--- a/lisa/analysis/tasks.py
+++ b/lisa/analysis/tasks.py
@@ -446,7 +446,7 @@ class TasksAnalysis(TraceAnalysisBase):
 
         :returns: a :class:`pandas.DataFrame` with:
 
-          * A ``cpu`` column (the CPU where the task was on)
+          * A ``cpu`` column (the CPU where the event took place)
           * A ``pid`` column (the PID of the task)
           * A ``comm`` column (the name of the task)
           * A ``target_cpu`` column (the CPU where the task has been scheduled).
@@ -479,7 +479,7 @@ class TasksAnalysis(TraceAnalysisBase):
 
         :returns: a :class:`pandas.DataFrame` with:
 
-          * A ``cpu`` column (the CPU where the task was on)
+          * A ``cpu`` column (the CPU where the event took place)
           * A ``target_cpu`` column (the CPU where the task has been scheduled).
             Will be ``-1`` for non-wakeup events
           * A ``curr_state`` column (the current task state, see :class:`~TaskState`)