diff --git a/src/main.cpp b/src/main.cpp
index f8d89e1ba..eb6dea327 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -439,6 +439,11 @@ void setup()
 
     LOG_INFO("\n\n//\\ E S H T /\\ S T / C\n");
 
+#if defined(ARCH_ESP32) && defined(BOARD_HAS_PSRAM)
+    // use PSRAM for malloc calls > 256 bytes
+    heap_caps_malloc_extmem_enable(256);
+#endif
+
 #if defined(DEBUG_MUTE) && defined(DEBUG_PORT)
     DEBUG_PORT.printf("\r\n\r\n//\\ E S H T /\\ S T / C\r\n");
     DEBUG_PORT.printf("Version %s for %s from %s\r\n", optstr(APP_VERSION), optstr(APP_ENV), optstr(APP_REPO));
diff --git a/src/mesh/Router.cpp b/src/mesh/Router.cpp
index 05f47d7f4..54a34fd35 100644
--- a/src/mesh/Router.cpp
+++ b/src/mesh/Router.cpp
@@ -37,8 +37,8 @@
 
 static MemoryDynamic<meshtastic_MeshPacket> dynamicPool;
 Allocator<meshtastic_MeshPacket> &packetPool = dynamicPool;
-#elif defined(ARCH_STM32WL)
-// On STM32 there isn't enough heap left over for the rest of the firmware if we allocate this statically.
+#elif defined(ARCH_STM32WL) || defined(BOARD_HAS_PSRAM)
+// On STM32 and boards with PSRAM, there isn't enough heap left over for the rest of the firmware if we allocate this statically.
 // For now, make it dynamic again.
 #define MAX_PACKETS                                                                                                              \
     (MAX_RX_TOPHONE + MAX_RX_FROMRADIO + 2 * MAX_TX_QUEUE +                                                                      \