diff --git a/android/prebuilt_build_tool.go b/android/prebuilt_build_tool.go
index b00dc2f..516d042 100644
--- a/android/prebuilt_build_tool.go
+++ b/android/prebuilt_build_tool.go
@@ -86,6 +86,9 @@
 
 func (t *prebuiltBuildTool) MakeVars(ctx MakeVarsModuleContext) {
 	if makeVar := String(t.properties.Export_to_make_var); makeVar != "" {
+		if t.Target().Os != BuildOs {
+			return
+		}
 		ctx.StrictRaw(makeVar, t.toolPath.String())
 	}
 }