diff --git a/port/samv71-xplained-atwilc3000/btstack_config.h b/port/samv71-xplained-atwilc3000/btstack_config.h
index 8f9b16722..4742e3c19 100644
--- a/port/samv71-xplained-atwilc3000/btstack_config.h
+++ b/port/samv71-xplained-atwilc3000/btstack_config.h
@@ -44,7 +44,8 @@
 #define MAX_NR_L2CAP_CHANNELS  0
 #define MAX_NR_L2CAP_SERVICES  0
 
-#define NVM_NUM_DEVICE_DB_ENTRIES      16
+// if defined, le_device_db_memory will not be compiled
+// #define NVM_NUM_DEVICE_DB_ENTRIES      16
 
 #endif
 
diff --git a/port/stm32-f103rb-nucleo/btstack_config.h b/port/stm32-f103rb-nucleo/btstack_config.h
index ffbcca5fc..47110e367 100644
--- a/port/stm32-f103rb-nucleo/btstack_config.h
+++ b/port/stm32-f103rb-nucleo/btstack_config.h
@@ -37,6 +37,7 @@
 #define MAX_NR_SERVICE_RECORD_ITEMS 1
 #define MAX_NR_LE_DEVICE_DB_ENTRIES 1
 
-#define NVM_NUM_DEVICE_DB_ENTRIES      16
+// if defined, le_device_db_memory will not be compiled
+// #define NVM_NUM_DEVICE_DB_ENTRIES      16
 
 #endif