diff --git a/examples/C/sum/Makefile b/examples/C/sum/Makefile
index 7c21cce23..a302309ff 100644
--- a/examples/C/sum/Makefile
+++ b/examples/C/sum/Makefile
@@ -4,7 +4,7 @@ $(TARGET).objdump: $(TARGET)
 	riscv64-unknown-elf-objdump -S -D $(TARGET) > $(TARGET).objdump
     
 $(TARGET): $(TARGET).c Makefile
-	riscv64-unknown-elf-gcc -o $(TARGET) -g -O\
+	riscv64-unknown-elf-gcc -o $(TARGET) -gdwarf-2 -O\
 	  -march=rv64gc -mabi=lp64d -mcmodel=medany \
 	  -nostdlib -static -lm -fno-tree-loop-distribute-patterns \
 	  -T../common/test.ld -I../common \