diff --git a/liboverlay/overlay.cpp b/liboverlay/overlay.cpp
index 97905d5..9b91760 100644
--- a/liboverlay/overlay.cpp
+++ b/liboverlay/overlay.cpp
@@ -311,6 +311,16 @@
     strncat(buf, str_pipes, strlen(str_pipes));
 }
 
+void Overlay::clear(int dpy) {
+    for(int i = 0; i < PipeBook::NUM_PIPES; i++) {
+        if (mPipeBook[i].mDisplay == dpy) {
+            // Mark as available for this round
+            PipeBook::resetUse(i);
+            PipeBook::resetAllocation(i);
+        }
+    }
+}
+
 void Overlay::PipeBook::init() {
     mPipe = NULL;
     mDisplay = DPY_UNUSED;