diff --git a/nuttx-configs/px4fmu-v4/nsh/defconfig b/nuttx-configs/px4fmu-v4/nsh/defconfig
index 97f48fc86b..a80ab34a70 100644
--- a/nuttx-configs/px4fmu-v4/nsh/defconfig
+++ b/nuttx-configs/px4fmu-v4/nsh/defconfig
@@ -42,10 +42,12 @@ CONFIG_ARCH_MATH_H=y
 #
 # Debug Options
 #
+CONFIG_DEBUG_ALERT=y
 # CONFIG_DEBUG_FEATURES is not set
-CONFIG_ARCH_HAVE_HEAPCHECK=y
 CONFIG_ARCH_HAVE_STACKCHECK=y
 CONFIG_STACK_COLORATION=y
+CONFIG_ARCH_HAVE_HEAPCHECK=y
+# CONFIG_HEAP_COLORATION is not set
 CONFIG_DEBUG_SYMBOLS=y
 CONFIG_ARCH_HAVE_CUSTOMOPT=y
 CONFIG_DEBUG_NOOPT=y