diff --git a/src/libs/ship/src/ship_utils.cpp b/src/libs/ship/src/ship_utils.cpp
index 32ccf567d..c715f82a1 100644
--- a/src/libs/ship/src/ship_utils.cpp
+++ b/src/libs/ship/src/ship_utils.cpp
@@ -43,7 +43,9 @@ BOOL SHIP::BuildContour(CVECTOR *vContour, int32_t &iNumVContour)
     {
         core.Trace("SHIP: Up trace error, ship %s", static_cast<const char*>(GetAShip()->GetAttribute("Name")));
         bDefaultContour = true;
+#ifdef _WIN32 // Beep
         Beep(1000, 200);
+#endif
     }
     // Assert(fRes<=1.0f);
 
@@ -57,7 +59,9 @@ BOOL SHIP::BuildContour(CVECTOR *vContour, int32_t &iNumVContour)
     {
         core.Trace("SHIP: Down trace error, ship %s", static_cast<const char*>(GetAShip()->GetAttribute("Name")));
         bDefaultContour = true;
+#ifdef _WIN32 // Beep
         Beep(1000, 200);
+#endif
     }
     // Assert(fRes<=1.0f);