diff --git a/src/types.h b/src/types.h
index fa1e820..4cb5ea6 100644
--- a/src/types.h
+++ b/src/types.h
@@ -40,12 +40,6 @@
 #include <sys/xattr.h>
 #endif
 
-#if __cplusplus < 201103L
-  #define OPERATOR_EXPLICIT
-#else
-  #define OPERATOR_EXPLICIT     explicit
-#endif
-
 //-------------------------------------------------------------------
 // xattrs_t
 //-------------------------------------------------------------------