diff --git a/source/lime/_internal/backend/native/NativeWindow.hx b/source/lime/_internal/backend/native/NativeWindow.hx
index 960391cc..4d409f53 100644
--- a/source/lime/_internal/backend/native/NativeWindow.hx
+++ b/source/lime/_internal/backend/native/NativeWindow.hx
@@ -305,7 +305,7 @@ class NativeWindow
 	{
 		if (handle != null)
 		{
-			#if (!macro && lime_cffi)
+			#if (!macro && lime_cffi && lime >= "8.1.0")
 			return NativeCFFI.lime_window_get_opacity(handle);
 			#end
 		}
@@ -467,7 +467,7 @@ class NativeWindow
 	{
 		if (handle != null)
 		{
-			#if (!macro && lime_cffi)
+			#if (!macro && lime_cffi && lime >= "8.1.0")
 			NativeCFFI.lime_window_set_minimum_size(handle, width, height);
 			#end
 		}
@@ -477,7 +477,7 @@ class NativeWindow
 	{
 		if (handle != null)
 		{
-			#if (!macro && lime_cffi)
+			#if (!macro && lime_cffi && lime >= "8.1.0")
 			NativeCFFI.lime_window_set_maximum_size(handle, width, height);
 			#end
 		}
@@ -666,7 +666,7 @@ class NativeWindow
 	{
 		if (handle != null)
 		{
-			#if (!macro && lime_cffi)
+			#if (!macro && lime_cffi && lime >= "8.1.0")
 			NativeCFFI.lime_window_set_opacity(handle, value);
 			#end
 		}
@@ -705,7 +705,7 @@ class NativeWindow
 	{
 		if (handle != null)
 		{
-			#if (!macro && lime_cffi)
+			#if (!macro && lime_cffi && lime >= "8.1.0")
 			NativeCFFI.lime_window_set_visible(handle, value);
 			#end
 		}
@@ -757,4 +757,4 @@ class NativeWindow
 	var WINDOW_FLAG_MAXIMIZED = 0x00004000;
 	var WINDOW_FLAG_ALWAYS_ON_TOP = 0x00008000;
 	var WINDOW_FLAG_COLOR_DEPTH_32_BIT = 0x00010000;
-}
\ No newline at end of file
+}