diff --git a/foreign/c/primitives/kawa.scm b/foreign/c/primitives/kawa.scm
index 2b6966f..d60127a 100644
--- a/foreign/c/primitives/kawa.scm
+++ b/foreign/c/primitives/kawa.scm
@@ -30,8 +30,8 @@
 (define type->native-type
   (lambda (type)
     (cond
-      ((equal? type 'int8) (invoke (static-field java.lang.foreign.ValueLayout 'JAVA_INT) 'withByteAlignment 1))
-      ((equal? type 'uint8) (invoke (static-field java.lang.foreign.ValueLayout 'JAVA_INT) 'withByteAlignment 1))
+      ((equal? type 'int8) (invoke (static-field java.lang.foreign.ValueLayout 'JAVA_BYTE) 'withByteAlignment 1))
+      ((equal? type 'uint8) (invoke (static-field java.lang.foreign.ValueLayout 'JAVA_BYTE) 'withByteAlignment 1))
       ((equal? type 'int16) (invoke (static-field java.lang.foreign.ValueLayout 'JAVA_INT) 'withByteAlignment 2))
       ((equal? type 'uint16) (invoke (static-field java.lang.foreign.ValueLayout 'JAVA_INT) 'withByteAlignment 2))
       ((equal? type 'int32) (invoke (static-field java.lang.foreign.ValueLayout 'JAVA_INT) 'withByteAlignment 4))