diff --git a/testing/scripts/build-certs b/testing/scripts/build-certs
index 649ea776a..7881db9fe 100755
--- a/testing/scripts/build-certs
+++ b/testing/scripts/build-certs
@@ -2,6 +2,9 @@
 
 echo "Building certificates"
 
+# Disable leak detective when using pki as it produces warnings in tzset
+export LEAK_DETECTIVE_DISABLE=1
+
 # Determine testing directory
 DIR="$(dirname `readlink -f $0`)/.."