diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revision history for ghc-trace-events
 
+## v0.1.2.1 - 2020-06-09
+
+* Delete some haddock comments that are not applicable to this library
+
 ## v0.1.2 - 2020-06-09
 
 * Revert "Use unsafeUseAsCString in place of useAsCString in Debug.Trace.Text" because it's unsafe
diff --git a/ghc-trace-events.cabal b/ghc-trace-events.cabal
--- a/ghc-trace-events.cabal
+++ b/ghc-trace-events.cabal
@@ -1,6 +1,6 @@
 cabal-version: 2.2
 name: ghc-trace-events
-version: 0.1.2
+version: 0.1.2.1
 synopsis: Faster traceEvent and traceMarker, and binary object logging for
   eventlog
 description: ghc-trace-events provides faster traceEvent and traceMarker as well
diff --git a/src/Debug/Trace/ByteString.hs b/src/Debug/Trace/ByteString.hs
--- a/src/Debug/Trace/ByteString.hs
+++ b/src/Debug/Trace/ByteString.hs
@@ -37,10 +37,6 @@
 -- extra events into the eventlog. In combination with eventlog profiling
 -- tools these functions can be used for monitoring execution and
 -- investigating performance problems.
---
--- Currently only GHC provides eventlog profiling, see the GHC user guide for
--- details on how to use it. These function exists for other Haskell
--- implementations but no events are emitted.
 
 -- | 'B.ByteString' variant of 'Debug.Trace.traceEvent'.
 --
@@ -136,11 +132,6 @@
 --
 -- Markers let us do this: we can annotate the program to emit a marker at
 -- an appropriate point during execution and then see that in a profile.
---
--- Currently this feature is only supported in GHC by the eventlog tracing
--- system, but in future it may also be supported by the heap profiling or
--- other profiling tools. These function exists for other Haskell
--- implementations but they have no effect.
 
 -- | 'B.ByteString' variant of 'Debug.Trace.traceMarker'.
 --
diff --git a/src/Debug/Trace/String.hs b/src/Debug/Trace/String.hs
--- a/src/Debug/Trace/String.hs
+++ b/src/Debug/Trace/String.hs
@@ -24,10 +24,6 @@
 -- extra events into the eventlog. In combination with eventlog profiling
 -- tools these functions can be used for monitoring execution and
 -- investigating performance problems.
---
--- Currently only GHC provides eventlog profiling, see the GHC user guide for
--- details on how to use it. These function exists for other Haskell
--- implementations but no events are emitted.
 
 -- | Drop-in replacement for 'Debug.Trace.traceEvent' but is more efficient
 -- if user tracing in eventlog is disabled.
@@ -65,11 +61,6 @@
 --
 -- Markers let us do this: we can annotate the program to emit a marker at
 -- an appropriate point during execution and then see that in a profile.
---
--- Currently this feature is only supported in GHC by the eventlog tracing
--- system, but in future it may also be supported by the heap profiling or
--- other profiling tools. These function exists for other Haskell
--- implementations but they have no effect.
 
 -- | Drop-in replacement for 'Debug.Trace.traceMarker' but is more efficient
 -- if user tracing in eventlog is disabled.
diff --git a/src/Debug/Trace/Text.hs b/src/Debug/Trace/Text.hs
--- a/src/Debug/Trace/Text.hs
+++ b/src/Debug/Trace/Text.hs
@@ -32,10 +32,6 @@
 -- extra events into the eventlog. In combination with eventlog profiling
 -- tools these functions can be used for monitoring execution and
 -- investigating performance problems.
---
--- Currently only GHC provides eventlog profiling, see the GHC user guide for
--- details on how to use it. These function exists for other Haskell
--- implementations but no events are emitted.
 
 -- | 'T.Text' variant of 'Debug.Trace.traceEvent'.
 --
@@ -88,11 +84,6 @@
 --
 -- Markers let us do this: we can annotate the program to emit a marker at
 -- an appropriate point during execution and then see that in a profile.
---
--- Currently this feature is only supported in GHC by the eventlog tracing
--- system, but in future it may also be supported by the heap profiling or
--- other profiling tools. These function exists for other Haskell
--- implementations but they have no effect.
 
 -- | 'T.Text' variant of 'Debug.Trace.traceMarker'.
 --