diff --git a/plugins/custom_calyptia/calyptia.c b/plugins/custom_calyptia/calyptia.c
index dba68a25f10..2723c8419da 100644
--- a/plugins/custom_calyptia/calyptia.c
+++ b/plugins/custom_calyptia/calyptia.c
@@ -617,7 +617,7 @@ static int cb_calyptia_init(struct flb_custom_instance *ins,
             flb_free(ctx);
             return -1;
         }
-        ctx->machine_id_auto_configured = 1;
+        ctx->machine_id_auto_configured = FLB_TRUE;
     }
 
     /* input collector */
diff --git a/plugins/custom_calyptia/calyptia.h b/plugins/custom_calyptia/calyptia.h
index 5da14d80ace..12e25fdd708 100644
--- a/plugins/custom_calyptia/calyptia.h
+++ b/plugins/custom_calyptia/calyptia.h
@@ -20,8 +20,6 @@
 #ifndef FLB_CALYPTIA_H
 #define FLB_CALYPTIA_H
 
-#include <stdbool.h>
-
 struct calyptia {
     /* config map options */
     flb_sds_t api_key;
@@ -55,7 +53,7 @@ struct calyptia {
     flb_sds_t fleet_max_http_buffer_size;
     flb_sds_t fleet_interval_sec;
     flb_sds_t fleet_interval_nsec;
-    bool register_retry_on_flush;   /* retry registration on flush if failed */
+    int register_retry_on_flush;   /* retry registration on flush if failed */
 };
 
 int set_fleet_input_properties(struct calyptia *ctx, struct flb_input_instance *fleet);