diff --git a/makefiles/toolchain_gnu-arm-eabi.mk b/makefiles/toolchain_gnu-arm-eabi.mk
index fbe378f509..1bbc5437d5 100644
--- a/makefiles/toolchain_gnu-arm-eabi.mk
+++ b/makefiles/toolchain_gnu-arm-eabi.mk
@@ -105,7 +105,7 @@ ARCHDEFINES		+= -DCONFIG_ARCH_BOARD_$(CONFIG_BOARD)
 # optimisation flags
 #
 ARCHOPTIMIZATION	 = $(MAXOPTIMIZATION) \
-			   -g \
+			   -g3 \
 			   -fno-strict-aliasing \
 			   -fno-strength-reduce \
 			   -fomit-frame-pointer \