diff --git a/src/escpos/printer/lp.py b/src/escpos/printer/lp.py
index 980c35f..1b7ed54 100644
--- a/src/escpos/printer/lp.py
+++ b/src/escpos/printer/lp.py
@@ -19,7 +19,7 @@ from ..escpos import Escpos
 def is_usable() -> bool:
     """Indicate whether this component can be used due to dependencies."""
     usable = False
-    if sys.platform.startswith("win"):
+    if not sys.platform.startswith("win"):
         usable = True
     return usable