diff --git a/src/ops.c b/src/ops.c
index f53567b..62d88a7 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -5584,6 +5584,7 @@
 	    did_change = TRUE;
 	    (void)del_char(FALSE);
 	    ins_char(firstdigit);
+	    curwin->w_cursor.col = col;
 	}
 	else
 	{
diff --git a/src/testdir/test_increment.in b/src/testdir/test_increment.in
index fb7e6e3..ecbc6f9 100644
--- a/src/testdir/test_increment.in
+++ b/src/testdir/test_increment.in
@@ -268,7 +268,15 @@
  Expected:
  1) <Ctrl-V>j$ <ctrl-a>
  2
- 1b
+ 2a
+
+20) increment a single letter
+Text:
+ a
+
+ Expected:
+ 1) <Ctrl-a> and cursor is on a
+ b
    
 
 
@@ -386,6 +394,13 @@
 k$
 :set nrformats&vim
 
+:" Test 20
+:set nrformats+=alpha
+:/^S20=/+,/^E20=/-y a
+:/^E20=/+put a
+:.put =col('.')
+:set nrformats&vim
+
 :" Save the report
 :/^# Test 1/,$w! test.out
 :qa!
@@ -572,6 +587,13 @@
 
 
 
+# Test 20
+S20====
+a
+E20====
+
+
+
 
 ENDTEST
 
diff --git a/src/testdir/test_increment.ok b/src/testdir/test_increment.ok
index 685478e..48e722f 100644
--- a/src/testdir/test_increment.ok
+++ b/src/testdir/test_increment.ok
@@ -271,6 +271,15 @@
 2a
 
 
+# Test 20
+S20====
+a
+E20====
+
+b
+1
+
+
 
 ENDTEST
 
diff --git a/src/version.c b/src/version.c
index 62eb4ed..c2fd979 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    823,
+/**/
     822,
 /**/
     821,