diff --git a/protocol/tagtinker_color26.h b/protocol/tagtinker_color26.h
deleted file mode 100644
index 8552440..0000000
--- a/protocol/tagtinker_color26.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * SmartTAG Color 2.6 (type 1626) geometry and page policy.
- * Glass is landscape 296x152. The image header is 152x296 (short x long).
- */
-
-#pragma once
-
-#include <stdint.h>
-#include <stdbool.h>
-
-#define TAGTINKER_TYPE_SMARTAG_COLOR_26 1626
-#define TAGTINKER_COLOR26_WIRE_W 152U
-#define TAGTINKER_COLOR26_WIRE_H 296U
-#define TAGTINKER_COLOR26_GLASS_W 296U
-#define TAGTINKER_COLOR26_GLASS_H 152U
-
-static inline bool tagtinker_type_needs_wh_swap(uint16_t type_code) {
-    return type_code == TAGTINKER_TYPE_SMARTAG_COLOR_26;
-}
-
-static inline bool tagtinker_type_uses_ui_page(uint16_t type_code) {
-    return tagtinker_type_needs_wh_swap(type_code);
-}
-
-/* Store-used Color 2.6 tags keep the barcode on page 1. Page 2 is the image
- * slot. Unspecified pages (0 or 1) map there. Explicit 2-7 are left alone. */
-static inline uint8_t tagtinker_color26_resolve_page(uint8_t page) {
-    if(page <= 1U) return 2U;
-    if(page > 7U) return 7U;
-    return page;
-}
-
-/* proto (px, py) on the 152x296 wire canvas -> glass (bx, by) 296x152. */
-static inline void tagtinker_color26_proto_to_glass(
-    uint16_t proto_w,
-    uint16_t px,
-    uint16_t py,
-    uint16_t* bx,
-    uint16_t* by) {
-    *bx = py;
-    *by = (uint16_t)(proto_w - 1U - px);
-}
diff --git a/protocol/tagtinker_proto.h b/protocol/tagtinker_proto.h
index db96527..1861cb7 100644
--- a/protocol/tagtinker_proto.h
+++ b/protocol/tagtinker_proto.h
@@ -12,13 +12,46 @@
 #include <stdint.h>
 #include <stddef.h>
 #include <stdbool.h>
-#include "tagtinker_color26.h"
 
 #define TAGTINKER_PROTO_DM  0x85
 #define TAGTINKER_PROTO_SEG 0x84
 #define TAGTINKER_MAX_FRAME_SIZE 96
 #define TAGTINKER_IMAGE_DATA_BYTES_PER_FRAME 20U
 
+/* Color 2.6 glass is landscape 296x152. Image header is 152x296 (short x long). */
+#define TAGTINKER_TYPE_SMARTAG_COLOR_26 1626
+#define TAGTINKER_COLOR26_WIRE_W 152U
+#define TAGTINKER_COLOR26_WIRE_H 296U
+#define TAGTINKER_COLOR26_GLASS_W 296U
+#define TAGTINKER_COLOR26_GLASS_H 152U
+
+static inline bool tagtinker_type_needs_wh_swap(uint16_t type_code) {
+    return type_code == TAGTINKER_TYPE_SMARTAG_COLOR_26;
+}
+
+static inline bool tagtinker_type_uses_ui_page(uint16_t type_code) {
+    return tagtinker_type_needs_wh_swap(type_code);
+}
+
+/* Store-used Color 2.6 tags keep the barcode on page 1. Page 2 is the image
+ * slot. Unspecified pages (0 or 1) map there. Explicit 2-7 are left alone. */
+static inline uint8_t tagtinker_color26_resolve_page(uint8_t page) {
+    if(page <= 1U) return 2U;
+    if(page > 7U) return 7U;
+    return page;
+}
+
+/* Wire (px, py) on 152x296 -> glass (bx, by) 296x152. */
+static inline void tagtinker_color26_proto_to_glass(
+    uint16_t proto_w,
+    uint16_t px,
+    uint16_t py,
+    uint16_t* bx,
+    uint16_t* by) {
+    *bx = py;
+    *by = (uint16_t)(proto_w - 1U - px);
+}
+
 typedef struct TagTinkerApp TagTinkerApp;
 
 /* CRC used by the ESL wire format. */
diff --git a/tests/test_color26.c b/tests/test_color26.c
index 168b302..52fe119 100644
--- a/tests/test_color26.c
+++ b/tests/test_color26.c
@@ -1,4 +1,4 @@
-#include "../protocol/tagtinker_color26.h"
+#include "../protocol/tagtinker_proto.h"
 #include <stdio.h>
 #include <stdlib.h>