diff --git a/dpf b/dpf
index df6d7f5..e44a908 160000
--- a/dpf
+++ b/dpf
@@ -1 +1 @@
-Subproject commit df6d7f50377266b1869c6c590ff7412d2241856e
+Subproject commit e44a908375610d7f46b507532b4602c9f89f085a
diff --git a/plugins/ProM/DistrhoUIProM.cpp b/plugins/ProM/DistrhoUIProM.cpp
index 71d4b9a..1d91980 100644
--- a/plugins/ProM/DistrhoUIProM.cpp
+++ b/plugins/ProM/DistrhoUIProM.cpp
@@ -96,6 +96,9 @@ DistrhoUIProM::DistrhoUIProM()
 
 DistrhoUIProM::~DistrhoUIProM()
 {
+    if (fPM == nullptr)
+        return;
+
     if (DistrhoPluginProM* const dspPtr = (DistrhoPluginProM*)getPluginInstancePointer())
     {
         const MutexLocker csm(dspPtr->fMutex);