diff --git a/README.md b/README.md
index 6e0fc97..38e838e 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,8 @@ Import bld.inf in Carbide.c++ with Symbian^3 or newer SDK, add PKG file to SIS B
 
 I use Carbide.c++ 3.2, Symbian Belle SDK with sbsv2 from QtSDK and RVCT 4.0, but it should also work with GCCE 4.4.1.
 
+Combination of S60 5th Edition (and older) with GCCE 3 or RVCT 2.2 produces non-working binaries, either use GCCE 4, or Symbian^3 SDK.
+
 ## License <small>(copied from original README)</small>
 
 We don't feel like we're in a position to give this code a license.\