diff --git a/src/register/primask.rs b/src/register/primask.rs
index 17f7295f..842ca49a 100644
--- a/src/register/primask.rs
+++ b/src/register/primask.rs
@@ -26,11 +26,7 @@ impl Primask {
 /// Reads the CPU register
 #[inline]
 pub fn read() -> Primask {
-    fn read_raw() -> u32 {
-        call_asm!(__primask_r() -> u32)
-    }
-
-    let r = read_raw();
+    let r: u32 = call_asm!(__primask_r() -> u32);
     if r & (1 << 0) == (1 << 0) {
         Primask::Inactive
     } else {