diff --git a/boards/xtensa/esp32/common/scripts/flat_memory.ld b/boards/xtensa/esp32/common/scripts/flat_memory.ld
index ed92a5867657d..73fc59c3219f9 100644
--- a/boards/xtensa/esp32/common/scripts/flat_memory.ld
+++ b/boards/xtensa/esp32/common/scripts/flat_memory.ld
@@ -157,7 +157,7 @@ MEMORY
   extmem_seg (RWX) :     org = 0x3f800000, len = 0x400000
 }
 
-#if CONFIG_ESP32_RUN_IRAM
+#ifdef CONFIG_ESP32_RUN_IRAM
   REGION_ALIAS("default_rodata_seg", dram0_0_seg);
   REGION_ALIAS("default_code_seg", iram0_0_seg);
 #else