diff --git a/docopt_c.py b/docopt_c.py
index 38bdbbc..40328ed 100755
--- a/docopt_c.py
+++ b/docopt_c.py
@@ -49,7 +49,10 @@
 
 #include <stdbool.h>
 
-#else
+#elif !defined(_STDBOOL_H)
+#define _STDBOOL_H
+
+#include <stdlib.h>
 
 #ifdef true
 #undef true
@@ -62,8 +65,8 @@
 #endif
 
 #define true 1
-#define false !true
-typedef int bool;
+#define false (!true)
+typedef size_t bool;
 
 #endif
 
@@ -389,7 +392,6 @@
             usage_pattern,
             $help_message
     };
-    struct Tokens ts;
     struct Command commands[] = {$elems_cmds
     };
     struct Argument arguments[] = {$elems_args
@@ -412,9 +414,11 @@
         return_code = EXIT_FAILURE;
     }
 
-    ts = tokens_new(argc, argv);
-    if (parse_args(&ts, &elements))
-        exit(EXIT_FAILURE);
+    {
+        struct Tokens ts = tokens_new(argc, argv);
+        if (parse_args(&ts, &elements))
+            exit(EXIT_FAILURE);
+    }
     if (elems_to_args(&elements, &args, help, version))
         exit(return_code);
     return args;
diff --git a/test/docopt.c b/test/docopt.c
index f0c2e59..481d92a 100644
--- a/test/docopt.c
+++ b/test/docopt.c
@@ -324,7 +324,6 @@ struct DocoptArgs docopt(int argc, char *argv[], const bool help, const char *ve
               "  --drifting    Drifting mine.",
               ""}
     };
-    struct Tokens ts;
     struct Command commands[] = {
         {"create", 0},
         {"mine", 0},
@@ -362,9 +361,11 @@ struct DocoptArgs docopt(int argc, char *argv[], const bool help, const char *ve
         return_code = EXIT_FAILURE;
     }
 
-    ts = tokens_new(argc, argv);
-    if (parse_args(&ts, &elements))
-        exit(EXIT_FAILURE);
+    {
+        struct Tokens ts = tokens_new(argc, argv);
+        if (parse_args(&ts, &elements))
+            exit(EXIT_FAILURE);
+    }
     if (elems_to_args(&elements, &args, help, version))
         exit(return_code);
     return args;
diff --git a/test/docopt.h b/test/docopt.h
index 6f9c4a5..11cf17b 100644
--- a/test/docopt.h
+++ b/test/docopt.h
@@ -7,7 +7,10 @@
 
 #include <stdbool.h>
 
-#else
+#elif !defined(_STDBOOL_H)
+#define _STDBOOL_H
+
+#include <stdlib.h>
 
 #ifdef true
 #undef true
@@ -20,8 +23,8 @@
 #endif
 
 #define true 1
-#define false !true
-typedef int bool;
+#define false (!true)
+typedef size_t bool;
 
 #endif
 
@@ -55,8 +58,7 @@ typedef int bool;
 
 #endif
 
-#elif (defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__) \
- || defined(__DragonFly__) || defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))
+#elif (defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)  || defined(__DragonFly__) || defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))
 
 #include <sys/param.h>