diff --git a/resources/image/back-book.png b/resources/image/back-book.png
index e7c568f..ad83d3e 100644
Binary files a/resources/image/back-book.png and b/resources/image/back-book.png differ
diff --git a/src/blupi.cxx b/src/blupi.cxx
index 4ec6552..9b2d7a7 100644
--- a/src/blupi.cxx
+++ b/src/blupi.cxx
@@ -760,7 +760,15 @@ DoInit (int argc, char * argv[], bool & exit)
   totalDim.y = LYLOGIC;
   iconDim.x  = 0;
   iconDim.y  = 0;
-  if (!g_pPixmap->Cache (CHBACKBUILD, "image/back-build.png", totalDim, iconDim))
+  if (!g_pPixmap->Cache (
+        CHBACKBUILD, "image/back-build.png", totalDim, iconDim))
+    return EXIT_FAILURE;
+
+  totalDim.x = LXLOGIC;
+  totalDim.y = LYLOGIC;
+  iconDim.x  = 0;
+  iconDim.y  = 0;
+  if (!g_pPixmap->Cache (CHBACKBOOK, "image/back-book.png", totalDim, iconDim))
     return EXIT_FAILURE;
 
   totalDim.x = DIMCELX * 2 * 16;
diff --git a/src/def.h b/src/def.h
index 0fbbe89..aeaaecf 100644
--- a/src/def.h
+++ b/src/def.h
@@ -90,6 +90,7 @@
 #define CHBIGNUM        14
 #define CHMASK2         15
 #define CHBACKBUILD     16
+#define CHBACKBOOK      17
 
 #define FOGHIDE         4
 // clang-format on
diff --git a/src/event.cxx b/src/event.cxx
index 409ac4d..8300b49 100644
--- a/src/event.cxx
+++ b/src/event.cxx
@@ -172,7 +172,7 @@ static Phase table[] =
     {
         EV_PHASE_HISTORY0,
         "image/history0.png",
-        CHNONE,
+        CHBACKBOOK,
         CPixmap::Mode::FIX,
         true,
         {
@@ -197,7 +197,7 @@ static Phase table[] =
     {
         EV_PHASE_HISTORY1,
         "image/history1.png",
-        CHNONE,
+        CHBACKBOOK,
         CPixmap::Mode::FIX,
         true,
         {
@@ -222,7 +222,7 @@ static Phase table[] =
     {
         EV_PHASE_INFO,
         "image/info%.3d.png",
-        CHNONE,
+        CHBACKBOOK,
         CPixmap::Mode::FIX,
         false,
         {
@@ -320,7 +320,7 @@ static Phase table[] =
     {
         EV_PHASE_STOP,
         "image/stop%.3d.png",
-        CHNONE,
+        CHBACKBOOK,
         CPixmap::Mode::FIX,
         false,
         {
@@ -369,7 +369,7 @@ static Phase table[] =
     {
         EV_PHASE_HELP,
         "image/help.png",
-        CHNONE,
+        CHBACKBOOK,
         CPixmap::Mode::FIX,
         true,
         {