diff --git a/crypt_test.go b/crypt_test.go
index 071e874..cfd6d17 100644
--- a/crypt_test.go
+++ b/crypt_test.go
@@ -3,6 +3,8 @@ package crypt
 import (
 	"strings"
 	"testing"
+
+	"github.com/emilymaier/cmemory"
 )
 
 func TestCryptSHA512(t *testing.T) {
@@ -73,10 +75,12 @@ func TestCheckMemoryAllocation(t *testing.T) {
 		niter = 512
 	)
 
+	cmemory.StartInstrumentation()
 	for i := 0; i < niter; i++ {
 		h, _ := Crypt(pass, salt)
 		_ = h
 	}
+	cmemory.StopInstrumentation()
 
 	// TODO: check all mem allocations are free'd
 }