diff --git a/include/mastodont_types.h b/include/mastodont_types.h
index 8632448..5a51716 100644
--- a/include/mastodont_types.h
+++ b/include/mastodont_types.h
@@ -23,9 +23,9 @@
 #define MSTDNT_URLSIZE 2048
 #define MSTDNT_URISIZE 512
 typedef int8_t mstdnt_bool;
-#define MSTDNT_TRUE 1
-#define MSTDNT_FALSE 0
-#define MSTDNT_BOOL_UNSET -1
+#define MSTDNT_TRUE 2
+#define MSTDNT_FALSE 1
+#define MSTDNT_BOOL_UNSET 0
 
 // It's more logical to not sanitize than to sanitize data
 #define MSTDNT_FLAG_NO_URI_SANITIZE (1<<0)