diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7070ba7..7ba311b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,7 +28,7 @@
 #-------------------------------------------------------------------------------
 set(DTCM_LENGTH "16M" CACHE STRING "DTCM Length (default: 16M)")
 add_link_options("LINKER:--defsym=__dtcm_length__=${DTCM_LENGTH}")
-set(ITCM_LENGTH "256K" CACHE STRING "ITCM (I-mem) Length (default: 256K)")
+set(ITCM_LENGTH "512K" CACHE STRING "ITCM (I-mem) Length (default: 512K)")
 add_link_options("LINKER:--defsym=__itcm_length__=${ITCM_LENGTH}")
 set(STACK_SIZE "10K" CACHE STRING "Stack size (default: 10K)")
 add_link_options("LINKER:--defsym=__stack_size__=${STACK_SIZE}")