diff --git a/src/index/vchordrq/am/am_build.rs b/src/index/vchordrq/am/am_build.rs
index 5803c772..647d2478 100644
--- a/src/index/vchordrq/am/am_build.rs
+++ b/src/index/vchordrq/am/am_build.rs
@@ -517,9 +517,10 @@ mod vchordrq_cached {
                     }
                     let pages_s = buffer.len();
                     buffer.extend(pages.iter().flat_map(|x| unsafe {
-                        std::mem::transmute::<&PostgresPage<vchordrq::Opaque>, &[u8; 8192]>(
-                            x.as_ref(),
-                        )
+                        std::mem::transmute::<
+                            &PostgresPage<vchordrq::Opaque>,
+                            &[u8; pgrx::pg_sys::BLCKSZ as usize],
+                        >(x.as_ref())
                     }));
                     let pages_e = buffer.len();
                     while buffer.len() % ALIGN != 0 {
diff --git a/src/index/vchordrq/dispatch.rs b/src/index/vchordrq/dispatch.rs
index ec4b5b51..01d70a87 100644
--- a/src/index/vchordrq/dispatch.rs
+++ b/src/index/vchordrq/dispatch.rs
@@ -179,15 +179,15 @@ pub fn maintain<R>(
             check,
         ),
     };
-    pgrx::info!(
+    pgrx::debug1!(
         "maintain: number_of_formerly_allocated_pages = {}",
         maintain.number_of_formerly_allocated_pages
     );
-    pgrx::info!(
+    pgrx::debug1!(
         "maintain: number_of_freshly_allocated_pages = {}",
         maintain.number_of_freshly_allocated_pages
     );
-    pgrx::info!(
+    pgrx::debug1!(
         "maintain: number_of_freed_pages = {}",
         maintain.number_of_freed_pages
     );
diff --git a/src/sql/finalize.sql b/src/sql/finalize.sql
index 39c0493a..a4f8f38a 100644
--- a/src/sql/finalize.sql
+++ b/src/sql/finalize.sql
@@ -189,16 +189,16 @@ CREATE OPERATOR @# (
 -- List of functions
 
 CREATE FUNCTION sphere(vector, real) RETURNS sphere_vector
-IMMUTABLE PARALLEL SAFE LANGUAGE sql AS 'SELECT ROW($1, $2)';
+IMMUTABLE PARALLEL SAFE LANGUAGE sql AS 'SELECT ROW($1, $2)::sphere_vector';
 
 CREATE FUNCTION sphere(halfvec, real) RETURNS sphere_halfvec
-IMMUTABLE PARALLEL SAFE LANGUAGE sql AS 'SELECT ROW($1, $2)';
+IMMUTABLE PARALLEL SAFE LANGUAGE sql AS 'SELECT ROW($1, $2)::sphere_halfvec';
 
 CREATE FUNCTION sphere(rabitq8, real) RETURNS sphere_rabitq8
-IMMUTABLE PARALLEL SAFE LANGUAGE sql AS 'SELECT ROW($1, $2)';
+IMMUTABLE PARALLEL SAFE LANGUAGE sql AS 'SELECT ROW($1, $2)::sphere_rabitq8';
 
 CREATE FUNCTION sphere(rabitq4, real) RETURNS sphere_rabitq4
-IMMUTABLE PARALLEL SAFE LANGUAGE sql AS 'SELECT ROW($1, $2)';
+IMMUTABLE PARALLEL SAFE LANGUAGE sql AS 'SELECT ROW($1, $2)::sphere_rabitq4';
 
 CREATE FUNCTION quantize_to_rabitq8(vector) RETURNS rabitq8
 IMMUTABLE STRICT PARALLEL SAFE LANGUAGE c AS 'MODULE_PATHNAME', '_vchord_vector_quantize_to_rabitq8_wrapper';