diff --git a/log/test_prefix.go b/log/test_prefix.go
index d1fb89491..8974ac30e 100644
--- a/log/test_prefix.go
+++ b/log/test_prefix.go
@@ -2,8 +2,18 @@
 
 package log
 
+import (
+	"fmt"
+	"os"
+
+	"github.com/letsencrypt/boulder/core"
+)
+
 // getPrefix returns the prefix and clkFormat that should be used by the
 // stdout logger.
 func getPrefix() (string, string) {
-	return "", "15:04:05.000000"
+	prefix := fmt.Sprintf("%s[%d]: ", core.Command(), os.Getpid())
+	clkFormat := "2006-01-02T15:04:05.000000+00:00Z"
+
+	return prefix, clkFormat
 }