diff --git a/src/graphics/GxEPD2Multi.h b/src/graphics/GxEPD2Multi.h
index f3807c9de..78ae06058 100644
--- a/src/graphics/GxEPD2Multi.h
+++ b/src/graphics/GxEPD2Multi.h
@@ -115,6 +115,10 @@ template <typename Driver0, typename Driver1> class GxEPD2_Multi
     // Select driver by passing whichDriver as 0 or 1
     GxEPD2_Multi(uint8_t whichDriver, int16_t cs, int16_t dc, int16_t rst, int16_t busy, SPIClass &spi)
     {
+        // Only the selected driver is allocated; the other stays null
+        driver0 = nullptr;
+        driver1 = nullptr;
+
         assert(whichDriver == 0 || whichDriver == 1);
         which = whichDriver;
         LOG_DEBUG("GxEPD2_Multi driver: %d", which);
@@ -128,6 +132,11 @@ template <typename Driver0, typename Driver1> class GxEPD2_Multi
         }
     }
 
+    // The driver we allocate above is owned by this object, and a single display can only be driven
+    // by one of them: copying would alias that pointer. There is exactly one instance per device.
+    GxEPD2_Multi(const GxEPD2_Multi &) = delete;
+    GxEPD2_Multi &operator=(const GxEPD2_Multi &) = delete;
+
   private:
     uint8_t which;
     GxEPD2_BW<Driver0, Driver0::HEIGHT> *driver0;