diff --git a/README.md b/README.md
index 88b0931..23b6405 100644
--- a/README.md
+++ b/README.md
@@ -894,13 +894,13 @@ Operator | Description | Added
 Function | Description | Added
 --- | --- | ---
 cosine_distance(halfvec, halfvec) → double precision | cosine distance | unreleased
-halfvec_dims(halfvec) → integer | number of dimensions | unreleased
 inner_product(halfvec, halfvec) → double precision | inner product | unreleased
 l1_distance(halfvec, halfvec) → double precision | taxicab distance | unreleased
 l2_distance(halfvec, halfvec) → double precision | Euclidean distance | unreleased
 l2_norm(halfvec) → double precision | Euclidean norm | unreleased
 quantize_binary(halfvec) → bit | quantize | unreleased
 subvector(halfvec, integer, integer) → halfvec | subvector | unreleased
+vector_dims(halfvec) → integer | number of dimensions | unreleased
 
 ### Halfvec Aggregate Functions
 
diff --git a/sql/vector.sql b/sql/vector.sql
index 687dedb..60e5620 100644
--- a/sql/vector.sql
+++ b/sql/vector.sql
@@ -364,8 +364,8 @@ CREATE FUNCTION cosine_distance(halfvec, halfvec) RETURNS float8
 CREATE FUNCTION l1_distance(halfvec, halfvec) RETURNS float8
 	AS 'MODULE_PATHNAME', 'halfvec_l1_distance' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
-CREATE FUNCTION halfvec_dims(halfvec) RETURNS integer
-	AS 'MODULE_PATHNAME' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
+CREATE FUNCTION vector_dims(halfvec) RETURNS integer
+	AS 'MODULE_PATHNAME', 'halfvec_vector_dims' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION l2_norm(halfvec) RETURNS float8
 	AS 'MODULE_PATHNAME', 'halfvec_l2_norm' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
diff --git a/src/halfvec.c b/src/halfvec.c
index c2c1ee3..874cdc4 100644
--- a/src/halfvec.c
+++ b/src/halfvec.c
@@ -715,9 +715,9 @@ halfvec_l1_distance(PG_FUNCTION_ARGS)
 /*
  * Get the dimensions of a half vector
  */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(halfvec_dims);
+PGDLLEXPORT PG_FUNCTION_INFO_V1(halfvec_vector_dims);
 Datum
-halfvec_dims(PG_FUNCTION_ARGS)
+halfvec_vector_dims(PG_FUNCTION_ARGS)
 {
 	HalfVector *a = PG_GETARG_HALFVEC_P(0);
 
diff --git a/test/expected/halfvec_functions.out b/test/expected/halfvec_functions.out
index d2b3e9a..52590bb 100644
--- a/test/expected/halfvec_functions.out
+++ b/test/expected/halfvec_functions.out
@@ -138,10 +138,10 @@ SELECT halfvec_cmp('[2,3]', '[1,2,3]');
            1
 (1 row)
 
-SELECT halfvec_dims('[1,2,3]'::halfvec);
- halfvec_dims 
---------------
-            3
+SELECT vector_dims('[1,2,3]'::halfvec);
+ vector_dims 
+-------------
+           3
 (1 row)
 
 SELECT round(l2_norm('[1,1]'::halfvec)::numeric, 5);
diff --git a/test/expected/vector_functions.out b/test/expected/vector_functions.out
index b489ad0..389a26f 100644
--- a/test/expected/vector_functions.out
+++ b/test/expected/vector_functions.out
@@ -138,7 +138,7 @@ SELECT vector_cmp('[2,3]', '[1,2,3]');
           1
 (1 row)
 
-SELECT vector_dims('[1,2,3]');
+SELECT vector_dims('[1,2,3]'::vector);
  vector_dims 
 -------------
            3
diff --git a/test/sql/halfvec_functions.sql b/test/sql/halfvec_functions.sql
index 67acc67..91a15f0 100644
--- a/test/sql/halfvec_functions.sql
+++ b/test/sql/halfvec_functions.sql
@@ -27,7 +27,7 @@ SELECT halfvec_cmp('[1,2,3]', '[1,2]');
 SELECT halfvec_cmp('[1,2]', '[2,3,4]');
 SELECT halfvec_cmp('[2,3]', '[1,2,3]');
 
-SELECT halfvec_dims('[1,2,3]'::halfvec);
+SELECT vector_dims('[1,2,3]'::halfvec);
 
 SELECT round(l2_norm('[1,1]'::halfvec)::numeric, 5);
 SELECT l2_norm('[3,4]'::halfvec);
diff --git a/test/sql/vector_functions.sql b/test/sql/vector_functions.sql
index 62b1a69..a8a3fed 100644
--- a/test/sql/vector_functions.sql
+++ b/test/sql/vector_functions.sql
@@ -27,7 +27,7 @@ SELECT vector_cmp('[1,2,3]', '[1,2]');
 SELECT vector_cmp('[1,2]', '[2,3,4]');
 SELECT vector_cmp('[2,3]', '[1,2,3]');
 
-SELECT vector_dims('[1,2,3]');
+SELECT vector_dims('[1,2,3]'::vector);
 
 SELECT round(vector_norm('[1,1]')::numeric, 5);
 SELECT vector_norm('[3,4]');