diff --git a/config_cxx.h b/config_cxx.h
index 45164435..541a1080 100644
--- a/config_cxx.h
+++ b/config_cxx.h
@@ -101,7 +101,7 @@
 // deleted functions: MS at VS2013 (18.00); GCC at 4.3; Clang at 2.9; Intel 12.1; SunCC 5.13.
 #if (CRYPTOPP_MSC_VERSION >= 1800) || (CRYPTOPP_LLVM_CLANG_VERSION >= 20900) || \
 	(CRYPTOPP_APPLE_CLANG_VERSION >= 40000) || (__INTEL_COMPILER >= 1210) || \
-	(CRYPTOPP_GCC_VERSION >= 40300) || (CRYPTOPP_GCC_VERSION >= 40300) || (__SUNPRO_CC >= 0x5130)
+	(CRYPTOPP_GCC_VERSION >= 40300) || (__SUNPRO_CC >= 0x5130)
 # define CRYPTOPP_CXX11_DELETED_FUNCTIONS 1
 #endif // deleted functions