diff --git a/README.md b/README.md
index 3f72173..4077a30 100644
--- a/README.md
+++ b/README.md
@@ -174,11 +174,11 @@ APPLICATION_NAME - name of profiling application
 
 ## Prerequisites
 
-For core:
-* compiler with c++11 support
-* cmake 3.0 or higher
+* CMake 3.0 or higher
+* Compiler with c++11 support
+  * for Unix systems compiler with `thread_local` support is **highly recommended**: _GCC >=4.8_, _Clang >=3.3_
 
-For GUI:
+Additional requirements for GUI:
 * Qt 5.3.0 or higher
 
 ## Linux