diff --git a/components/platform/partitions-2MB.csv b/components/platform/partitions-2MB.csv
index 957f28b5..62b9b45f 100644
--- a/components/platform/partitions-2MB.csv
+++ b/components/platform/partitions-2MB.csv
@@ -1,7 +1,7 @@
-# Espressif ESP32 Partition Table
+# Espressif ESP32 Partition Table for 2MB flash
 # Name,  Type, SubType, Offset,  Size
 nvs,      data, nvs,     0x9000,  0x6000
 phy_init, data, phy,     0xf000,  0x1000
-factory,  app,  factory, 0x10000, 1M
+factory,  app,  factory, 0x10000, 0x180000
 # 0xC2 => NodeMCU, 0x0 => Spiffs
-spiffs,  0xC2, 0x0,            , 960K
+nodemcuspiffs,  0xC2, 0x0,      , 0x70000
diff --git a/components/platform/partitions.csv b/components/platform/partitions.csv
new file mode 100644
index 00000000..cead9a3b
--- /dev/null
+++ b/components/platform/partitions.csv
@@ -0,0 +1,5 @@
+# Espressif ESP32 Partition Table for 2MB flash
+# Name,  Type, SubType, Offset,  Size
+nvs,      data, nvs,     0x9000,  0x6000
+phy_init, data, phy,     0xf000,  0x1000
+factory,  app,  factory, 0x10000, 0x180000
diff --git a/docs/en/build.md b/docs/en/build.md
index 3294f9ce..16615591 100644
--- a/docs/en/build.md
+++ b/docs/en/build.md
@@ -92,9 +92,9 @@ Serial flasher config --->
 ```
 
 ### Partition Table
-It is not required to set a custom partition table. Per default the IDF will select `Single factory app, no OTA` and the firmware will create a partition for SPIFFS automatically which fills the remaining flash space.
+IDF's default partition table `Single factory app, no OTA` does not provide enough room for a firmware including large modules like e.g. `http` or `sodium`. To enable full feature sets, NodeMCU uses a custom partition table from `components/platform/partitions.csv` which allocates ~1.5 MB for the firmware image. During first boot, the firmware creates an additional partition for SPIFFS in the remaining flash space.
 
-There is a template partition table available in `components/platform/partitions-2MB.csv` locates the SPIFFS partition at a fixed location. The file can be used as a template for custom partition tables with menuconfig:
+For 2MB flash modules an alternative partition table available as `components/platform/partitions-2MB.csv`. It restricts the SPIFFS partition to  ~448 kB and can be used with menuconfig:
 
 ```
 Partition Table --->
diff --git a/sdkconfig.defaults b/sdkconfig.defaults
index cfbf171b..4b70ba78 100644
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -1,3 +1,7 @@
+# set custom partition table for 1.5MB firmware
+CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="components/platform/partitions.csv"
+CONFIG_PARTITION_TABLE_FILENAME="components/platform/partitions.csv"
+
 # Don't warn about undefined variables
 CONFIG_MAKE_WARN_UNDEFINED_VARIABLES=n