diff --git a/Docs/src/compiler.but b/Docs/src/compiler.but
index ba9490f6..c7ea68ab 100644
--- a/Docs/src/compiler.but
+++ b/Docs/src/compiler.but
@@ -219,7 +219,7 @@ NSIS version as a 32 bit number.
 \c   !error "NSIS 2.47 or higher is required to build this installer!"
 \c !endif
 
-\S1{preunicodecodepoint} $\{U+1\}...$\{U+FFFFFFFF\}
+\S1{preunicodecodepoint} $\{U+1\}...$\{U+10FFFF\}
 
 A Unicode (UCS-4) character.
 
diff --git a/Docs/src/history.but b/Docs/src/history.but
index c530edfa..793b7bab 100644
--- a/Docs/src/history.but
+++ b/Docs/src/history.but
@@ -162,7 +162,7 @@ Released on May 19th, 2013
 
 \b The index of the changed section is stored in $0 during .onSelChange callbacks (\W{http://sourceforge.net/support/tracker.php?aid=1634936}{RFE #1634936})
 
-\b $\{U+1\}...$\{U+FFFFFFFF\} are treated as a Unicode characters unless there is already a define with that name (\W{http://sourceforge.net/support/tracker.php?aid=2084797}{RFE #2084797})
+\b $\{U+1\}...$\{U+10FFFF\} are treated as a Unicode character unless there is already a define with that name (\W{http://sourceforge.net/support/tracker.php?aid=2084797}{RFE #2084797})
 
 \S2{} Minor Changes