diff --git a/ports/servoshell/build.rs b/ports/servoshell/build.rs
index 6fb1f1eca7b..c014245ef46 100644
--- a/ports/servoshell/build.rs
+++ b/ports/servoshell/build.rs
@@ -11,6 +11,9 @@ use std::process::Command;
 fn git_sha() -> Result<String, String> {
     let output = Command::new("git")
         .args(["rev-parse", "--short", "HEAD"])
+        // on macos mach sets DYLD_LIBRARY_PATH since it is needed for unit-tests, but it
+        // causes git to fail, so we remove it for the git invocation.
+        .env_remove("DYLD_LIBRARY_PATH")
         .output()
         .map_err(|e| e.to_string())?;
     if output.status.success() {