diff --git a/src/librustc/ich/impls_const_math.rs b/src/librustc/ich/impls_const_math.rs
index 494fa49b53de..3c1205a67843 100644
--- a/src/librustc/ich/impls_const_math.rs
+++ b/src/librustc/ich/impls_const_math.rs
@@ -31,7 +31,4 @@ impl_stable_hash_for!(enum ::rustc_const_math::Op {
     Shr,
     Shl,
     Neg,
-    BitAnd,
-    BitOr,
-    BitXor
 });
diff --git a/src/librustc_const_math/err.rs b/src/librustc_const_math/err.rs
index 94a51c23a5ea..552932993ecf 100644
--- a/src/librustc_const_math/err.rs
+++ b/src/librustc_const_math/err.rs
@@ -26,9 +26,6 @@ pub enum Op {
     Shr,
     Shl,
     Neg,
-    BitAnd,
-    BitOr,
-    BitXor,
 }
 
 impl ConstMathErr {
@@ -43,7 +40,6 @@ impl ConstMathErr {
             Overflow(Neg) => "attempt to negate with overflow",
             Overflow(Shr) => "attempt to shift right with overflow",
             Overflow(Shl) => "attempt to shift left with overflow",
-            Overflow(_) => unreachable!(),
             DivisionByZero => "attempt to divide by zero",
             RemainderByZero => "attempt to calculate the remainder with a divisor of zero",
         }