diff --git a/gex.mk b/gex.mk
index 5a5c35a..e4505d0 100644
--- a/gex.mk
+++ b/gex.mk
@@ -81,7 +81,7 @@ GEX_CDEFS = $(GEX_CDEFS_BASE) \
     -DUSE_FULL_ASSERT=1 \
     -DVERBOSE_ASSERT=1 \
     -DDEBUG_VFS=0 \
-    -DDEBUG_FLASH_WRITE=1 \
+    -DDEBUG_FLASH_WRITE=0 \
     -DVERBOSE_HARDFAULT=1 \
     -DUSE_STACK_MONITOR=1 \
     -DUSE_DEBUG_UART=1