diff --git a/private/coveralls.rkt b/private/coveralls.rkt
index 21f0a89..083556b 100644
--- a/private/coveralls.rkt
+++ b/private/coveralls.rkt
@@ -26,7 +26,9 @@
                   (if (verbose)
                       (current-output-port)
                       (open-output-nowhere))])
-    (void (system* (path->string post) coverage-file))))
+    (void (system* (path->string post)
+                   coverage-file
+                   (if (vebose) "-v" "")))))
 
 ;; Maps service name to the environment variable that indicates that the service is to be used.
 (define BUILD-TYPES (hash "travis-ci" "TRAVIS_JOB_ID"))
diff --git a/private/curl.sh b/private/curl.sh
index 6cf1c20..bb19a15 100755
--- a/private/curl.sh
+++ b/private/curl.sh
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 
 file=$1
+verbose=$2
 
-curl -v --include --form json_file=@"$file" "https://coveralls.io/api/v1/jobs"
+curl $verbose --include --form json_file=@"$file" "https://coveralls.io/api/v1/jobs"