diff --git a/rust/src/callingconvention.rs b/rust/src/callingconvention.rs
index 14cfd61ad..b5f81575c 100644
--- a/rust/src/callingconvention.rs
+++ b/rust/src/callingconvention.rs
@@ -563,7 +563,7 @@ impl<A: Architecture> CallingConventionBase for CallingConvention<A> {
         unsafe {
             let mut count = 0;
             let regs = BNGetIntegerArgumentRegisters(self.handle, &mut count);
-            let arch = self.arch_handle.borrow();
+            let arch = self.arch_handle;
 
             let res = slice::from_raw_parts(regs, count)
                 .iter()
@@ -583,7 +583,7 @@ impl<A: Architecture> CallingConventionBase for CallingConvention<A> {
         unsafe {
             let mut count = 0;
             let regs = BNGetFloatArgumentRegisters(self.handle, &mut count);
-            let arch = self.arch_handle.borrow();
+            let arch = self.arch_handle;
 
             let res = slice::from_raw_parts(regs, count)
                 .iter()