diff --git a/sqlite3.go b/sqlite3.go
index af25769..8df3ef2 100644
--- a/sqlite3.go
+++ b/sqlite3.go
@@ -364,22 +364,14 @@ func (s *SQLiteStmt) bind(args []driver.Value) error {
 				b := []byte(v)
 				rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(len(b)))
 			}
-		case int:
-			rv = C.sqlite3_bind_int64(s.s, n, C.sqlite3_int64(v))
-		case int32:
-			rv = C.sqlite3_bind_int(s.s, n, C.int(v))
 		case int64:
 			rv = C.sqlite3_bind_int64(s.s, n, C.sqlite3_int64(v))
-		case byte:
-			rv = C.sqlite3_bind_int(s.s, n, C.int(v))
 		case bool:
 			if bool(v) {
 				rv = C.sqlite3_bind_int(s.s, n, 1)
 			} else {
 				rv = C.sqlite3_bind_int(s.s, n, 0)
 			}
-		case float32:
-			rv = C.sqlite3_bind_double(s.s, n, C.double(v))
 		case float64:
 			rv = C.sqlite3_bind_double(s.s, n, C.double(v))
 		case []byte: