diff --git a/include/boost/config/compiler/gcc.hpp b/include/boost/config/compiler/gcc.hpp
index a4b3d2b8..49bcb494 100644
--- a/include/boost/config/compiler/gcc.hpp
+++ b/include/boost/config/compiler/gcc.hpp
@@ -49,7 +49,7 @@
 #  error "Compiler not configured - please reconfigure"
 #endif
 //
-// last known and checked version is 3.0:
+// last known and checked version is 3.1:
 #if (__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ > 1))
 #  if defined(BOOST_ASSERT_CONFIG)
 #     error "Unknown compiler version - please run the configure tests and report the results"