diff --git a/include/boost/config/compiler/gcc.hpp b/include/boost/config/compiler/gcc.hpp
index 65378a19..4dc3f608 100644
--- a/include/boost/config/compiler/gcc.hpp
+++ b/include/boost/config/compiler/gcc.hpp
@@ -84,8 +84,8 @@
 #  error "Compiler not configured - please reconfigure"
 #endif
 //
-// last known and checked version is 3.3:
-#if (__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ > 3))
+// last known and checked version is 3.4:
+#if (__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ > 4))
 #  if defined(BOOST_ASSERT_CONFIG)
 #     error "Unknown compiler version - please run the configure tests and report the results"
 #  else