diff --git a/toolchain/Config.in b/toolchain/Config.in
index 05cc350f2e..161e46fea8 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -195,7 +195,7 @@ config GDB
 	bool
 	depends on !avr32
 	prompt "Build gdb" if TOOLCHAINOPTS
-	default y
+	default y if !EXTERNAL_TOOLCHAIN
 	help
 		Enable if you want to build the gdb