diff --git a/libcpu/arm/common/backtrace.c b/libcpu/arm/common/backtrace.c
index a9f9f63bf82150f8c5ca8ffefbfe5b0cd43036a6..03ee6143e4820aec39a9648a2cba94ef162067ad 100644
--- a/libcpu/arm/common/backtrace.c
+++ b/libcpu/arm/common/backtrace.c
@@ -49,7 +49,7 @@ void rt_hw_backtrace(rt_uint32_t *fp, rt_uint32_t thread_entry)
 
 		if(func_entry <= 0x30000000) break;
 
-		if((func_entry == thread_entry))
+		if(func_entry == thread_entry)
 		{
 			rt_kprintf("EntryPoint:0x%x\n", func_entry);