diff --git a/docs/extensions.md b/docs/extensions.md
index b58fc777..1c5e89da 100644
--- a/docs/extensions.md
+++ b/docs/extensions.md
@@ -10,7 +10,7 @@ They typically parse the output generated by harnesses.
 ReBench currently provides builtin support for the following benchmark harnesses:
 
 - `JMH`: [JMH](http://openjdk.java.net/projects/code-tools/jmh/), Java's microbenchmark harness
-- `PlainSecondsLog`: a plain seconds log, i.e., a floating point number per line
+- `PlainSecondsLog`: a plain seconds log, i.e., a floating point number per line in seconds
 - `ReBenchLog`: the ReBench log format, which indicates benchmark name and run time in milliseconds or microseconds
 - `SavinaLog`: the harness of the [Savina](https://github.com/shamsimam/savina) benchmarks
 - `ValidationLog`: the format used by [SOMns](https://github.com/smarr/SOMns)'s ImpactHarness
@@ -19,8 +19,8 @@ ReBench currently provides builtin support for the following benchmark harnesses
 
 ### `PlainSecondsLog`
 
-This adapter attempts to read every line of program output as a millisecond
-measurement. Lines which cannot be parsed as floats are skipped, e.g. `1.0` and
+This adapter attempts to read every line of program output as measurement
+in seconds. Lines which cannot be parsed as floats are skipped, e.g. `1.0` and
 `  2 ` are valid, while `out: 1` and `1, 2, 3` are not and would be ignored.
 
 Example output from a harness or benchmark:
diff --git a/rebench/interop/plain_seconds_log_adapter.py b/rebench/interop/plain_seconds_log_adapter.py
index 2865b5b7..4356fab2 100644
--- a/rebench/interop/plain_seconds_log_adapter.py
+++ b/rebench/interop/plain_seconds_log_adapter.py
@@ -27,8 +27,8 @@
 
 
 class PlainSecondsLogAdapter(GaugeAdapter):
-    """PlainSecondsLogAdapter expects a plain list of numbers, one per line.
-       It can also contain error information.
+    """PlainSecondsLogAdapter expects a plain list of numbers, one per line
+       in seconds. It can also contain error information.
     """
     re_NPB_partial_invalid = re.compile(r".*Failed.*verification")
     re_NPB_invalid = re.compile(r".*Benchmark done.*verification failed")