diff --git a/samples/ruby.rb b/samples/ruby.rb
index ba42f46..580dc57 100644
--- a/samples/ruby.rb
+++ b/samples/ruby.rb
@@ -43,7 +43,7 @@ UNINITCORE = %{
 
 # Unicode identifiers (valid in Ruby)
 变量 = 0x5_4eddaee
-π = 3.14_159e+2, ?\u0234, ?\,, ?\x0A, ?s, trued, falsess
+π = 3.14_159e+2, ?\u0234, ?\,, ?\x0A, ?s, true, false
 挨拶 = -> { "こんに \n ちは" }
 
 # Method using unicode variable names
diff --git a/src/syntax/ruby.cc b/src/syntax/ruby.cc
index ca7359c..c29f0ce 100644
--- a/src/syntax/ruby.cc
+++ b/src/syntax/ruby.cc
@@ -801,15 +801,15 @@ std::shared_ptr<void> ruby_parse(std::vector<Token> *tokens,
       } else {
         uint32_t start = i;
         if (i + 3 < len && text[i] == 't' && text[i + 1] == 'r' &&
-            text[i + 2] == 'u' && text[i + 3] == 'e' && i + 4 < len &&
-            !identifier_char(text[i + 4])) {
+            text[i + 2] == 'u' && text[i + 3] == 'e' &&
+            ((i + 4 < len && !identifier_char(text[i + 4])) || i + 4 == len)) {
           i += 4;
           tokens->push_back({start, i, TokenKind::True});
           continue;
         }
         if (i + 4 < len && text[i] == 'f' && text[i + 1] == 'a' &&
             text[i + 2] == 'l' && text[i + 3] == 's' && text[i + 4] == 'e' &&
-            i + 5 < len && !identifier_char(text[i + 5])) {
+            ((i + 5 < len && !identifier_char(text[i + 5])) || i + 5 == len)) {
           i += 5;
           tokens->push_back({start, i, TokenKind::False});
           continue;
diff --git a/themes/default.json b/themes/default.json
index 09a49c2..0cbd02b 100644
--- a/themes/default.json
+++ b/themes/default.json
@@ -25,7 +25,7 @@
     "fg": "#7AE93C"
   },
   "False": {
-    "fg": "#F03138"
+    "fg": "#EF5168"
   },
   "Char": {
     "fg": "#FFAF70"