diff --git a/default.xml b/default.xml
index 19fe9a1..70121d9 100644
--- a/default.xml
+++ b/default.xml
@@ -328,6 +328,7 @@
   <project path="external/OpenCSD" name="platform/external/OpenCSD" groups="pdk" />
   <project path="external/oss-fuzz" name="platform/external/oss-fuzz" groups="pdk" />
   <project path="external/owasp/sanitizer" name="platform/external/owasp/sanitizer" groups="pdk" />
+  <project path="external/pffft" name="platform/external/pffft" groups="pdk" />
   <project path="external/parameter-framework" name="platform/external/parameter-framework" groups="pdk" />
   <project path="external/pcre" name="platform/external/pcre" groups="pdk" />
   <project path="external/pdfium" name="platform/external/pdfium" groups="pdk" />