diff --git a/src/session.c b/src/session.c
index 68e40db..fa77f89 100644
--- a/src/session.c
+++ b/src/session.c
@@ -385,9 +385,9 @@
 	    // Note, if a buffer for that file already exists, use :badd to
 	    // edit that buffer, to not lose folding information (:edit resets
 	    // folds in other buffers)
-	    if (fputs("if bufexists(\"", fd) < 0
+	    if (fputs("if bufexists(fnamemodify(\"", fd) < 0
 		    || ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
-		    || fputs("\") | buffer ", fd) < 0
+		    || fputs("\", \":p\")) | buffer ", fd) < 0
 		    || ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
 		    || fputs(" | else | edit ", fd) < 0
 		    || ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
diff --git a/src/testdir/test_mksession.vim b/src/testdir/test_mksession.vim
index 494ac87..2c2737e 100644
--- a/src/testdir/test_mksession.vim
+++ b/src/testdir/test_mksession.vim
@@ -245,6 +245,7 @@
   let count1 = 0
   let count2 = 0
   let count2buf = 0
+  let bufexists = 0
   for line in lines
     if line =~ 'edit \f*Xtest1$'
       let count1 += 1
@@ -255,10 +256,14 @@
     if line =~ 'buffer \f\{-}Xtest2'
       let count2buf += 1
     endif
+    if line =~ 'bufexists(fnamemodify(.*, ":p")'
+      let bufexists += 1
+    endif
   endfor
   call assert_equal(1, count1, 'Xtest1 count')
   call assert_equal(2, count2, 'Xtest2 count')
   call assert_equal(2, count2buf, 'Xtest2 buffer count')
+  call assert_equal(2, bufexists)
 
   close
   bwipe!
diff --git a/src/version.c b/src/version.c
index 2ea5965..5576f20 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4566,
+/**/
     4565,
 /**/
     4564,