diff --git a/aos/common/logging/logging.h b/aos/common/logging/logging.h
index 3f32be3..6de118b 100644
--- a/aos/common/logging/logging.h
+++ b/aos/common/logging/logging.h
@@ -162,7 +162,7 @@
 //    CHECK(fp->Write(x) == 4)
 #define CHECK(condition)  \
   if (__builtin_expect(!(condition), 0)) { \
-    LOG(FATAL, "CHECK(" #condition ") failed\n"); \
+    LOG(FATAL, "CHECK(%s) failed\n", #condition); \
   }
 
 // Helper functions for CHECK_OP macro.