diff --git a/src/hnsw.h b/src/hnsw.h
index 1f69bac..d1a53c1 100644
--- a/src/hnsw.h
+++ b/src/hnsw.h
@@ -258,7 +258,7 @@ typedef struct HnswVacuumState
 int			HnswGetM(Relation index);
 int			HnswGetEfConstruction(Relation index);
 FmgrInfo   *HnswOptionalProcInfo(Relation rel, uint16 procnum);
-bool		HnswNormValue(FmgrInfo *procinfo, FmgrInfo *normalizeprocinfo, Oid collation, Datum *value, Vector * result);
+void		HnswNormValue(FmgrInfo *procinfo, FmgrInfo *normalizeprocinfo, Oid collation, Datum *value, Vector * result);
 void		HnswCommitBuffer(Buffer buf, GenericXLogState *state);
 Buffer		HnswNewBuffer(Relation index, ForkNumber forkNum);
 void		HnswInitPage(Buffer buf, Page page);
diff --git a/src/hnswbuild.c b/src/hnswbuild.c
index 5315c09..b20db10 100644
--- a/src/hnswbuild.c
+++ b/src/hnswbuild.c
@@ -278,8 +278,7 @@ InsertTuple(Relation index, Datum *values, HnswElement element, HnswBuildState *
 	Datum		value = PointerGetDatum(PG_DETOAST_DATUM(values[0]));
 
 	/* Normalize if needed */
-	if (!HnswNormValue(buildstate->normprocinfo, buildstate->normalizeprocinfo, collation, &value, buildstate->normvec))
-		return false;
+	HnswNormValue(buildstate->normprocinfo, buildstate->normalizeprocinfo, collation, &value, buildstate->normvec);
 
 	/* Copy value to element so accessible outside of memory context */
 	memcpy(element->vec, DatumGetVector(value), VECTOR_SIZE(buildstate->dimensions));
diff --git a/src/hnswinsert.c b/src/hnswinsert.c
index d4b89b3..17ff965 100644
--- a/src/hnswinsert.c
+++ b/src/hnswinsert.c
@@ -434,8 +434,7 @@ HnswInsertTuple(Relation index, Datum *values, bool *isnull, ItemPointer heap_ti
 	/* Normalize if needed */
 	normprocinfo = HnswOptionalProcInfo(index, HNSW_NORM_PROC);
 	normalizeprocinfo = HnswOptionalProcInfo(index, HNSW_NORMALIZE_PROC);
-	if (!HnswNormValue(normprocinfo, normalizeprocinfo, collation, &value, NULL))
-		return false;
+	HnswNormValue(normprocinfo, normalizeprocinfo, collation, &value, NULL);
 
 	/* Create an element */
 	element = HnswInitElement(heap_tid, m, ml, HnswGetMaxLevel(m));
diff --git a/src/hnswutils.c b/src/hnswutils.c
index 36dc46d..2fc2361 100644
--- a/src/hnswutils.c
+++ b/src/hnswutils.c
@@ -47,14 +47,12 @@ HnswOptionalProcInfo(Relation rel, uint16 procnum)
 }
 
 /*
- * Divide by the norm
- *
- * Returns false if value should not be indexed
+ * Normalize a vector
  *
  * The caller needs to free the pointer stored in value
  * if it's different than the original value
  */
-bool
+void
 HnswNormValue(FmgrInfo *procinfo, FmgrInfo *normalizeprocinfo, Oid collation, Datum *value, Vector * result)
 {
 	double		norm;
@@ -62,11 +60,11 @@ HnswNormValue(FmgrInfo *procinfo, FmgrInfo *normalizeprocinfo, Oid collation, Da
 	if (normalizeprocinfo != NULL)
 	{
 		*value = FunctionCall1Coll(normalizeprocinfo, collation, *value);
-		return true;
+		return;
 	}
 
 	if (procinfo == NULL)
-		return true;
+		return;
 
 	norm = DatumGetFloat8(FunctionCall1Coll(procinfo, collation, *value));
 
@@ -81,11 +79,7 @@ HnswNormValue(FmgrInfo *procinfo, FmgrInfo *normalizeprocinfo, Oid collation, Da
 			result->x[i] = v->x[i] / norm;
 
 		*value = PointerGetDatum(result);
-
-		return true;
 	}
-
-	return false;
 }
 
 /*