diff --git a/plugin/fugitive.vim b/plugin/fugitive.vim
index 50b67f7..6188b29 100644
--- a/plugin/fugitive.vim
+++ b/plugin/fugitive.vim
@@ -2179,8 +2179,8 @@ function! s:BlameSyntax() abort
   let arg = exists('b:fugitive_blame_arguments') ? b:fugitive_blame_arguments : ''
   syn match FugitiveblameBoundary "^\^"
   syn match FugitiveblameBlank                      "^\s\+\s\@=" nextgroup=FugitiveblameAnnotation,fugitiveblameOriginalFile,FugitiveblameOriginalLineNumber skipwhite
-  syn match FugitiveblameHash       "\%(^\^\=\)\@<=\x\{7,40\}\>" nextgroup=FugitiveblameAnnotation,FugitiveblameOriginalLineNumber,fugitiveblameOriginalFile skipwhite
-  syn match FugitiveblameUncommitted "\%(^\^\=\)\@<=0\{7,40\}\>" nextgroup=FugitiveblameAnnotation,FugitiveblameOriginalLineNumber,fugitiveblameOriginalFile skipwhite
+  syn match FugitiveblameHash       "\%(^\^\=\)\@<=\<\x\{7,40\}\>" nextgroup=FugitiveblameAnnotation,FugitiveblameOriginalLineNumber,fugitiveblameOriginalFile skipwhite
+  syn match FugitiveblameUncommitted "\%(^\^\=\)\@<=\<0\{7,40\}\>" nextgroup=FugitiveblameAnnotation,FugitiveblameOriginalLineNumber,fugitiveblameOriginalFile skipwhite
   syn region FugitiveblameAnnotation matchgroup=FugitiveblameDelimiter start="(" end="\%( \d\+\)\@<=)" contained keepend oneline
   syn match FugitiveblameTime "[0-9:/+-][0-9:/+ -]*[0-9:/+-]\%( \+\d\+)\)\@=" contained containedin=FugitiveblameAnnotation
   exec 'syn match FugitiveblameLineNumber         " *\d\+)\@=" contained containedin=FugitiveblameAnnotation'.conceal