diff --git a/src/rpm_spec.rs b/src/rpm_spec.rs
index 41f7221..401ea09 100644
--- a/src/rpm_spec.rs
+++ b/src/rpm_spec.rs
@@ -367,7 +367,7 @@ impl MockBackend {
         });
 
         self.macros.iter().for_each(|(name, value)| {
-            cmd.arg("-D").arg(format!("'{name} {value}'"));
+            cmd.arg("-D").arg(format!("{name} {value}"));
         });
 
         if self.no_mirror {