diff --git a/rust-afterburn.spec b/rust-afterburn.spec
index b8241fc..be4370b 100644
--- a/rust-afterburn.spec
+++ b/rust-afterburn.spec
@@ -105,6 +105,8 @@ to run in the initramfs on boot.
 %if 0%{?rhel} && !0%{?eln}
 tar xvf %{SOURCE1}
 %cargo_prep -v vendor
+# avoid brp-mangle-shebangs error from sources with executable bit            
+chmod -x vendor/ipnet/src/*.rs
 %else
 %cargo_prep
 %endif