diff --git a/src/dialects/builtin/ops.rs b/src/dialects/builtin/ops.rs
index 93b2d1d..75b17cb 100644
--- a/src/dialects/builtin/ops.rs
+++ b/src/dialects/builtin/ops.rs
@@ -124,7 +124,7 @@ declare_op!(
 
 impl FuncOp {
     /// Attribute key for the constant value.
-    pub const ATTR_KEY_FUNC_TYPE: &str = "func.type";
+    pub const ATTR_KEY_FUNC_TYPE: &'static str = "func.type";
 
     /// Create a new [FuncOp].
     /// The underlying [Operation] is not linked to a [BasicBlock].
@@ -246,7 +246,7 @@ declare_op!(
 
 impl ConstantOp {
     /// Attribute key for the constant value.
-    pub const ATTR_KEY_VALUE: &str = "constant.value";
+    pub const ATTR_KEY_VALUE: &'static str = "constant.value";
     /// Get the constant value that this Op defines.
     pub fn get_value(&self, ctx: &Context) -> AttrObj {
         let op = self.get_operation().deref(ctx);
diff --git a/src/dialects/llvm/types.rs b/src/dialects/llvm/types.rs
index 0d19ec1..a5200c5 100644
--- a/src/dialects/llvm/types.rs
+++ b/src/dialects/llvm/types.rs
@@ -129,7 +129,7 @@ impl StructType {
         Type::get_instance(
             StructType {
                 name: Some(name.to_string()),
-                /// Named structs are uniqued only on the name.
+                // Named structs are uniqued only on the name.
                 fields: vec![],
                 finalized: false,
             },