diff --git a/disassembler.c b/disassembler.c
index 2e93c3c..9417466 100644
--- a/disassembler.c
+++ b/disassembler.c
@@ -14,12 +14,11 @@
  * limitations under the License.
  */
 
+#include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdarg.h>
 
-typedef enum { false, true } bool;
-
 #include "v7/apf_defs.h"
 #include "v7/apf.h"
 #include "disassembler.h"