diff --git a/src/libstd/build.rs b/src/libstd/build.rs
index 8fb49a1be4ea6..a1144a964fd37 100644
--- a/src/libstd/build.rs
+++ b/src/libstd/build.rs
@@ -23,7 +23,7 @@ fn main() {
 
     let target = env::var("TARGET").unwrap();
     let host = env::var("HOST").unwrap();
-    if !target.contains("apple") && !target.contains("msvc") {
+    if !target.contains("apple") && !target.contains("msvc") && !target.contains("emscripten"){
         build_libbacktrace(&host, &target);
     }