diff --git a/branches/follower/wiz810mj/src/lib/Makefile b/branches/follower/wiz810mj/src/lib/Makefile
index 44e2c6e..55d3b36 100644
--- a/branches/follower/wiz810mj/src/lib/Makefile
+++ b/branches/follower/wiz810mj/src/lib/Makefile
@@ -15,7 +15,7 @@ COMMON = -mmcu=$(MCU)
 
 ## Compile options common for all C compilation units.
 CFLAGS = $(COMMON)
-CFLAGS += -Wall -gdwarf-2  -O0 -fsigned-char
+CFLAGS += -Wall -O0 -fsigned-char
 CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d -D__COMPILER_VERSION__=2
 INCLUDES =