diff --git a/src/hb-ot-shape-private.hh b/src/hb-ot-shape-private.hh
index 3e3efdeac..c716962fc 100644
--- a/src/hb-ot-shape-private.hh
+++ b/src/hb-ot-shape-private.hh
@@ -104,20 +104,20 @@ _hb_unicode_modified_combining_class (hb_unicode_funcs_t *ufuncs,
 {
   int c = hb_unicode_combining_class (ufuncs, unicode);
 
-  /* For Hebrew, we permute the "fixed-position" classes 10-15 into the order
+  /* For Hebrew, we permute the "fixed-position" classes 10-25 into the order
    * described in the SBL Hebrew manual http://www.sbl-site.org/Fonts/SBLHebrewUserManual1.5x.pdf
    * (as recommended by http://forum.fontlab.com/archive-old-microsoft-volt-group/vista-and-diacritic-ordering-t6751.0.html)
    */
   static const int permuted_hebrew_classes[25 - 10 + 1] = {
-    /* 10 sheva */        15,
-    /* 11 hataf segol */  16,
-    /* 12 hataf patah */  17,
-    /* 13 hataf qamats */ 18,
-    /* 14 hiriq */        19,
-    /* 15 tsere */        20,
-    /* 16 segol */        21,
-    /* 17 patah */        22,
-    /* 18 qamats */       23,
+    /* 10 sheva */        22,
+    /* 11 hataf segol */  15,
+    /* 12 hataf patah */  16,
+    /* 13 hataf qamats */ 17,
+    /* 14 hiriq */        23,
+    /* 15 tsere */        18,
+    /* 16 segol */        19,
+    /* 17 patah */        20,
+    /* 18 qamats */       21,
     /* 19 holam */        14,
     /* 20 qubuts */       24,
     /* 21 dagesh */       12,