diff --git a/terminal_check_nacl.go b/terminal_check_nacl.go
new file mode 100644
index 0000000..59d1e2c
--- /dev/null
+++ b/terminal_check_nacl.go
@@ -0,0 +1,11 @@
+// +build nacl
+
+package logrus
+
+import (
+	"io"
+)
+
+func checkIfTerminal(w io.Writer) bool {
+	return false
+}
diff --git a/terminal_check_notappengine.go b/terminal_check_notappengine.go
index 7be2d87..a0b571a 100644
--- a/terminal_check_notappengine.go
+++ b/terminal_check_notappengine.go
@@ -1,4 +1,4 @@
-// +build !appengine,!js,!windows
+// +build !appengine,!js,!windows,!nacl
 
 package logrus