diff --git a/compiler/cpp/src/thrift.l b/compiler/cpp/src/thrift.l
index 1f4d7fe..1ff7708 100644
--- a/compiler/cpp/src/thrift.l
+++ b/compiler/cpp/src/thrift.l
@@ -36,6 +36,7 @@
 "namespace"   { return tok_namespace; }
 
 "void"        { return tok_void;     }
+"bool"        { return tok_bool;     }
 "byte"        { return tok_byte;     }
 "i16"         { return tok_i16;      }
 "i32"         { return tok_i32;      }