diff --git a/src/kaleid/common/status.h b/src/kaleid/common/status.h
index b445fec..c7a1147 100644
--- a/src/kaleid/common/status.h
+++ b/src/kaleid/common/status.h
@@ -24,5 +24,7 @@
 #define BAD_ARGUMENT      (-4)         // invalid arguments, can't be more precise
 #define BAD_ARG_RANGE     (-5)         // arguments out of range
 
+#define TRY_AGAIN         (-6)         // EAGAIN
+
 #endif