diff --git a/lib/src/store/numeric_encoder.rs b/lib/src/store/numeric_encoder.rs
index 2709af85..c64f74b7 100644
--- a/lib/src/store/numeric_encoder.rs
+++ b/lib/src/store/numeric_encoder.rs
@@ -24,8 +24,8 @@ const TYPE_SIMPLE_LITERAL_ID: u8 = 3;
 const TYPE_LANG_STRING_LITERAL_ID: u8 = 4;
 const TYPE_TYPED_LITERAL_ID: u8 = 5;
 const TYPE_STRING_LITERAL: u8 = 6;
-const TYPE_BOOLEAN_LITERAL_TRUE: u8 = 6;
-const TYPE_BOOLEAN_LITERAL_FALSE: u8 = 7;
+const TYPE_BOOLEAN_LITERAL_TRUE: u8 = 7;
+const TYPE_BOOLEAN_LITERAL_FALSE: u8 = 8;
 
 pub static ENCODED_DEFAULT_GRAPH: EncodedTerm = EncodedTerm::DefaultGraph {};