diff --git a/package/synergy/Config.in b/package/synergy/Config.in
index e0ac246155..c1216c4ba9 100644
--- a/package/synergy/Config.in
+++ b/package/synergy/Config.in
@@ -4,6 +4,7 @@ config BR2_PACKAGE_SYNERGY
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_USE_WCHAR
 	depends on BR2_USE_MMU # fork()
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # C++14
 	select BR2_PACKAGE_XLIB_LIBX11
 	select BR2_PACKAGE_XLIB_LIBXTST
 	help
@@ -14,7 +15,8 @@ config BR2_PACKAGE_SYNERGY
 
 	  https://github.com/symless/synergy-core/
 
-comment "synergy needs a toolchain w/ C++, wchar"
+comment "synergy needs a toolchain w/ C++, wchar, gcc >= 4.9"
 	depends on BR2_PACKAGE_XORG7
 	depends on BR2_USE_MMU
-	depends on !(BR2_INSTALL_LIBSTDCPP && BR2_USE_WCHAR)
+	depends on !(BR2_INSTALL_LIBSTDCPP && BR2_USE_WCHAR && \
+		BR2_TOOLCHAIN_GCC_AT_LEAST_4_9)