diff --git a/plugins/out_s3/s3.c b/plugins/out_s3/s3.c
index d6c58d6bbba..25a58d45bc0 100644
--- a/plugins/out_s3/s3.c
+++ b/plugins/out_s3/s3.c
@@ -700,7 +700,7 @@ static int cb_s3_init(struct flb_output_instance *ins,
          */
         ctx->upload_chunk_size = ctx->file_size;
         if (ctx->file_size > MAX_FILE_SIZE_PUT_OBJECT) {
-            flb_plg_error(ctx->ins, "Max total_file_size is 50M when use_put_object is enabled");
+            flb_plg_error(ctx->ins, "Max total_file_size is "MAX_FILE_SIZE_PUT_OBJECT_STR" when use_put_object is enabled");
             return -1;
         }
     }
diff --git a/plugins/out_s3/s3.h b/plugins/out_s3/s3.h
index e51d39f2419..a964091249e 100644
--- a/plugins/out_s3/s3.h
+++ b/plugins/out_s3/s3.h
@@ -44,6 +44,7 @@
 
 /* Allowed max file size 1 GB for publishing to S3 */
 #define MAX_FILE_SIZE_PUT_OBJECT        1000000000 
+#define MAX_FILE_SIZE_PUT_OBJECT_STR    "1G"
 
 #define DEFAULT_UPLOAD_TIMEOUT 3600