diff --git a/src/etc/unicode.py b/src/etc/unicode.py
index 406f5380d469..2b0f8d971f51 100755
--- a/src/etc/unicode.py
+++ b/src/etc/unicode.py
@@ -330,7 +330,7 @@ fn trie_range_leaf(c: usize, bitmap_chunk: u64) -> bool {
 fn trie_lookup_range_table(c: char, r: &'static BoolTrie) -> bool {
     let c = c as usize;
     if c < 0x800 {
-        trie_range_leaf(c, r.r1[c >> 8])
+        trie_range_leaf(c, r.r1[c >> 6])
     } else if c < 0x10000 {
         let child = r.r2[c >> 6];
         trie_range_leaf(c, r.r3[child as usize])
diff --git a/src/librustc_unicode/tables.rs b/src/librustc_unicode/tables.rs
index a3afa3b56ec9..6c992369cd45 100644
--- a/src/librustc_unicode/tables.rs
+++ b/src/librustc_unicode/tables.rs
@@ -37,7 +37,7 @@ fn trie_range_leaf(c: usize, bitmap_chunk: u64) -> bool {
 fn trie_lookup_range_table(c: char, r: &'static BoolTrie) -> bool {
     let c = c as usize;
     if c < 0x800 {
-        trie_range_leaf(c, r.r1[c >> 8])
+        trie_range_leaf(c, r.r1[c >> 6])
     } else if c < 0x10000 {
         let child = r.r2[c >> 6];
         trie_range_leaf(c, r.r3[child as usize])