diff --git a/backend/zint.h b/backend/zint.h
index bec95839..109bef0c 100644
--- a/backend/zint.h
+++ b/backend/zint.h
@@ -341,7 +341,7 @@ extern "C" {
 #define ULTRA_COMPRESSION       128     /* Enable Ultracode compression (experimental) */
 
 /* Warning and error conditions (API return values) */
-#define ZINT_WARN_HRT_TRUNCATED     1   /* Human Readable Text was truncated (max 199 bytes) */
+#define ZINT_WARN_HRT_TRUNCATED     1   /* Human Readable Text was truncated (max 255 bytes) */
 #define ZINT_WARN_INVALID_OPTION    2   /* Invalid option given but overridden by Zint */
 #define ZINT_WARN_USES_ECI          3   /* Automatic ECI inserted by Zint */
 #define ZINT_WARN_NONCOMPLIANT      4   /* Symbol created not compliant with standards */
diff --git a/docs/manual.html b/docs/manual.html
index 6bc1f4c3..d1d5c893 100644
--- a/docs/manual.html
+++ b/docs/manual.html
@@ -10010,7 +10010,7 @@ Success (including when given informational options <code>-h</code> |
 </dd>
 <dt><code>1</code></dt>
 <dd>
-Human Readable Text was truncated (maximum 199 bytes)
+Human Readable Text was truncated (maximum 255 bytes)
 (<code>ZINT_WARN_HRT_TRUNCATED</code>)
 </dd>
 <dt><code>2</code></dt>
diff --git a/docs/manual.txt b/docs/manual.txt
index 23ecd25a..87871c53 100644
--- a/docs/manual.txt
+++ b/docs/manual.txt
@@ -5992,7 +5992,7 @@ EXIT STATUS
     --ecinos, -t | --types, -v | --version).
 
 1
-    Human Readable Text was truncated (maximum 199 bytes)
+    Human Readable Text was truncated (maximum 255 bytes)
     (ZINT_WARN_HRT_TRUNCATED)
 
 2
diff --git a/docs/zint.1 b/docs/zint.1
index 87113050..d42a0b55 100644
--- a/docs/zint.1
+++ b/docs/zint.1
@@ -702,7 +702,7 @@ Success (including when given informational options \f[CR]\-h\f[R] |
 \f[CR]\-\-version\f[R]).
 .TP
 \f[CR]1\f[R]
-Human Readable Text was truncated (maximum 199 bytes)
+Human Readable Text was truncated (maximum 255 bytes)
 (\f[CR]ZINT_WARN_HRT_TRUNCATED\f[R])
 .TP
 \f[CR]2\f[R]
diff --git a/docs/zint.1.pmd b/docs/zint.1.pmd
index 5fb6f536..eb200b3d 100644
--- a/docs/zint.1.pmd
+++ b/docs/zint.1.pmd
@@ -610,7 +610,7 @@ Paintbrush (`PCX`), Portable Network Format (`PNG`), Scalable Vector Graphic (`S
     `--version`).
 
 `1`
-:   Human Readable Text was truncated (maximum 199 bytes) (`ZINT_WARN_HRT_TRUNCATED`)
+:   Human Readable Text was truncated (maximum 255 bytes) (`ZINT_WARN_HRT_TRUNCATED`)
 
 `2`
 :   Invalid option given but overridden by Zint (`ZINT_WARN_INVALID_OPTION`)