diff --git a/src/runtime/defs_openbsd.go b/src/runtime/defs_openbsd.go
index 2ca6a88eca..5db8b67dd0 100644
--- a/src/runtime/defs_openbsd.go
+++ b/src/runtime/defs_openbsd.go
@@ -57,9 +57,6 @@ const (
 
 	PTHREAD_CREATE_DETACHED = C.PTHREAD_CREATE_DETACHED
 
-	F_GETFL = C.F_GETFL
-	F_SETFL = C.F_SETFL
-
 	SIGHUP    = C.SIGHUP
 	SIGINT    = C.SIGINT
 	SIGQUIT   = C.SIGQUIT
diff --git a/src/runtime/defs_solaris.go b/src/runtime/defs_solaris.go
index 11708ee23a..54c4008340 100644
--- a/src/runtime/defs_solaris.go
+++ b/src/runtime/defs_solaris.go
@@ -125,8 +125,6 @@ const (
 	O_CREAT    = C.O_CREAT
 	O_TRUNC    = C.O_TRUNC
 	O_CLOEXEC  = C.O_CLOEXEC
-	F_GETFL    = C.F_GETFL
-	F_SETFL    = C.F_SETFL
 
 	POLLIN  = C.POLLIN
 	POLLOUT = C.POLLOUT