diff --git a/benchmarks/README.md b/benchmarks/README.md
index d6ae8173a04f4..a4d238c343c1c 100644
--- a/benchmarks/README.md
+++ b/benchmarks/README.md
@@ -102,12 +102,15 @@ If you want to disassemble a single method do something like this:
 gradlew -p benchmarks run --args ' MemoryStatsBenchmark -jvmArgs "-XX:+UnlockDiagnosticVMOptions -XX:CompileCommand=print,*.yourMethodName -XX:PrintAssemblyOptions=intel"
 ```
 
-If you want `perf` to find the hot methods for you then do add `-prof:perfasm`.
+If you want `perf` to find the hot methods for you then do add `-prof perfasm`.
 
 ## Async Profiler
 
 Note: Linux and Mac only. Sorry Windows.
 
+IMPORTANT: The 2.0 version of the profiler doesn't seem to be with compatible
+with JMH as of 2021-04-30.
+
 The async profiler is neat because it does not suffer from the safepoint
 bias problem. And because it makes pretty flame graphs!