diff --git a/src/hb-open-type-private.hh b/src/hb-open-type-private.hh
index 8bc741698..e21bd4583 100644
--- a/src/hb-open-type-private.hh
+++ b/src/hb-open-type-private.hh
@@ -186,7 +186,7 @@ struct hb_sanitize_context_t :
   inline void start_processing (void)
   {
     this->start = hb_blob_get_data (this->blob, nullptr);
-    this->end = this->start + hb_blob_get_length (this->blob);
+    this->end = this->start + this->blob->length;
     assert (this->start <= this->end); /* Must not overflow. */
     this->max_ops = MAX ((unsigned int) (this->end - this->start) * HB_SANITIZE_MAX_OPS_FACTOR,
 			 (unsigned) HB_SANITIZE_MAX_OPS_MIN);
@@ -329,7 +329,7 @@ struct Sanitizer
       unsigned int edit_count = c->edit_count;
       if (edit_count && !c->writable) {
         c->start = hb_blob_get_data_writable (blob, nullptr);
-	c->end = c->start + hb_blob_get_length (blob);
+	c->end = c->start + blob->length;
 
 	if (c->start) {
 	  c->writable = true;
diff --git a/src/hb-ot-kern-table.hh b/src/hb-ot-kern-table.hh
index 9366dbf48..b0fdea4a7 100644
--- a/src/hb-ot-kern-table.hh
+++ b/src/hb-ot-kern-table.hh
@@ -364,7 +364,7 @@ struct kern
     {
       blob = Sanitizer<kern>().sanitize (face->reference_table (HB_OT_TAG_kern));
       table = blob->as<kern> ();
-      table_length = hb_blob_get_length (blob);
+      table_length = blob->length;
     }
     inline void fini (void)
     {
diff --git a/src/hb-ot-layout.cc b/src/hb-ot-layout.cc
index d5efde294..368a84658 100644
--- a/src/hb-ot-layout.cc
+++ b/src/hb-ot-layout.cc
@@ -77,9 +77,9 @@ _hb_ot_layout_create (hb_face_t *face)
      * See this thread for why we finally had to bend in and do this:
      * https://lists.freedesktop.org/archives/harfbuzz/2016-February/005489.html
      */
-    unsigned int gdef_len = hb_blob_get_length (layout->gdef_blob);
-    unsigned int gsub_len = hb_blob_get_length (layout->gsub_blob);
-    unsigned int gpos_len = hb_blob_get_length (layout->gpos_blob);
+    unsigned int gdef_len = layout->gdef_blob->length;
+    unsigned int gsub_len = layout->gsub_blob->length;
+    unsigned int gpos_len = layout->gpos_blob->length;
     if (0
       /* sha1sum:c5ee92f0bca4bfb7d06c4d03e8cf9f9cf75d2e8a Windows 7? timesi.ttf */
       || (442 == gdef_len && 42038 == gpos_len && 2874 == gsub_len)
diff --git a/src/hb-ot-post-table.hh b/src/hb-ot-post-table.hh
index bb5f9b313..8ba5ee103 100644
--- a/src/hb-ot-post-table.hh
+++ b/src/hb-ot-post-table.hh
@@ -111,7 +111,7 @@ struct post
     {
       blob = Sanitizer<post>().sanitize (face->reference_table (HB_OT_TAG_post));
       const post *table = blob->as<post> ();
-      unsigned int table_length = hb_blob_get_length (blob);
+      unsigned int table_length = blob->length;
 
       version = table->version.to_int ();
       index_to_offset.init ();