diff --git a/src/sfnt/ttcolr.c b/src/sfnt/ttcolr.c
index 7929b7aaf..0307aae7e 100644
--- a/src/sfnt/ttcolr.c
+++ b/src/sfnt/ttcolr.c
@@ -236,8 +236,10 @@
       p1                 = (FT_Byte*)( table + base_glyphs_offset_v1 );
       num_base_glyphs_v1 = FT_PEEK_ULONG( p1 );
 
-      if ( ( table_size - base_glyphs_offset_v1 ) / BASE_GLYPH_PAINT_RECORD_SIZE
-               < num_base_glyphs_v1 )
+      /* Account for 4 byte numBaseGlyphPaintRecords at the beginning of */
+      /* the BaseGlyphPaintRecord array.                                 */
+      if ( ( table_size - base_glyphs_offset_v1 - 4 ) /
+               BASE_GLYPH_PAINT_RECORD_SIZE < num_base_glyphs_v1 )
         goto InvalidTable;
 
       colr->num_base_glyphs_v1 = num_base_glyphs_v1;