diff --git a/boards/risc-v/espressif/common/scripts/esp32c3_flat_memory.ld b/boards/risc-v/espressif/common/scripts/esp32c3_flat_memory.ld
index 1f49ec2444..68673670eb 100644
--- a/boards/risc-v/espressif/common/scripts/esp32c3_flat_memory.ld
+++ b/boards/risc-v/espressif/common/scripts/esp32c3_flat_memory.ld
@@ -48,16 +48,6 @@
 
 #define I_D_SRAM_SIZE       SRAM_DRAM_END - SRAM_DRAM_ORG
 
-#ifdef CONFIG_ESPRESSIF_FLASH_2M
-#  define FLASH_SIZE        0x200000
-#elif defined (CONFIG_ESPRESSIF_FLASH_4M)
-#  define FLASH_SIZE        0x400000
-#elif defined (CONFIG_ESPRESSIF_FLASH_8M)
-#  define FLASH_SIZE        0x800000
-#elif defined (CONFIG_ESPRESSIF_FLASH_16M)
-#  define FLASH_SIZE        0x1000000
-#endif
-
 MEMORY
 {
   /* Below values assume the flash cache is on, and have the blocks this
@@ -77,7 +67,7 @@ MEMORY
    * constraint that (paddr % 64KB == vaddr % 64KB).
    */
 
-  irom0_0_seg (RX) :      org = 0x42000020, len = FLASH_SIZE - 0x20
+  irom0_0_seg (RX) :      org = 0x42000020, len = 0x800000 - 0x20
 
   /* Shared data RAM, excluding memory reserved for ROM bss/data/stack. */
 
@@ -92,7 +82,7 @@ MEMORY
    * constraint that (paddr % 64KB == vaddr % 64KB).
    */
 
-  drom0_0_seg (R) :      org = 0x3c000020, len = FLASH_SIZE - 0x20
+  drom0_0_seg (R) :      org = 0x3c000020, len = 0x800000 - 0x20
 
   /* RTC fast memory. Persists over deep sleep. */