diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 74e024d..8a92ff6 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -6830,55 +6830,55 @@
 			echo printf("%1$*2$.*3$f", 1.4142135, 6, 2)
 <			  1.41
 
-							*E1400*
+							*E1500*
 		You cannot mix positional and non-positional arguments: >
 			echo printf("%s%1$s", "One", "Two")
-<			E1400: Cannot mix positional and non-positional
+<			E1500: Cannot mix positional and non-positional
 			arguments: %s%1$s
 
-							*E1401*
+							*E1501*
 		You cannot skip a positional argument in a format string: >
 			echo printf("%3$s%1$s", "One", "Two", "Three")
-<			E1401: format argument 2 unused in $-style
+<			E1501: format argument 2 unused in $-style
 			format: %3$s%1$s
 
-							*E1402*
+							*E1502*
 		You can re-use a [field-width] (or [precision]) argument: >
 			echo printf("%1$d at width %2$d is: %01$*2$d", 1, 2)
 <			1 at width 2 is: 01
 
 		However, you can't use it as a different type: >
 			echo printf("%1$d at width %2$ld is: %01$*2$d", 1, 2)
-<			E1402: Positional argument 2 used as field
+<			E1502: Positional argument 2 used as field
 			width reused as different type: long int/int
 
-							*E1403*
+							*E1503*
 		When a positional argument is used, but not the correct number
 		or arguments is given, an error is raised: >
 			echo printf("%1$d at width %2$d is: %01$*2$.*3$d", 1, 2)
-<			E1403: Positional argument 3 out of bounds:
+<			E1503: Positional argument 3 out of bounds:
 			%1$d at width %2$d is: %01$*2$.*3$d
 
 		Only the first error is reported: >
 			echo printf("%01$*2$.*3$d %4$d", 1, 2)
-<			E1403: Positional argument 3 out of bounds:
+<			E1503: Positional argument 3 out of bounds:
 			%01$*2$.*3$d %4$d
 
-							*E1404*
+							*E1504*
 		A positional argument can be used more than once: >
 			echo printf("%1$s %2$s %1$s", "One", "Two")
 <			One Two One
 
 		However, you can't use a different type the second time: >
 			echo printf("%1$s %2$s %1$d", "One", "Two")
-<			E1404: Positional argument 1 type used
+<			E1504: Positional argument 1 type used
 			inconsistently: int/string
 
-							*E1405*
+							*E1505*
 		Various other errors that lead to a format string being
 		wrongly formatted lead to: >
 			echo printf("%1$d at width %2$d is: %01$*2$.3$d", 1, 2)
-<			E1405: Invalid format specifier:
+<			E1505: Invalid format specifier:
 			%1$d at width %2$d is: %01$*2$.3$d
 
 prompt_getprompt({buf})					*prompt_getprompt()*