diff --git a/arch/avr/src/avrdx/Make.defs b/arch/avr/src/avrdx/Make.defs
index 1b92a37994b..4978f92b3a4 100644
--- a/arch/avr/src/avrdx/Make.defs
+++ b/arch/avr/src/avrdx/Make.defs
@@ -31,11 +31,15 @@ CMN_CSRCS  = avr_allocateheap.c avr_copystate.c avr_createstack.c
 CMN_CSRCS += avr_doirq.c avr_exit.c avr_idle.c avr_initialize.c
 CMN_CSRCS += avr_initialstate.c avr_irq.c avr_lowputs.c
 CMN_CSRCS += avr_nputs.c avr_releasestack.c avr_registerdump.c
-CMN_CSRCS += avr_schedulesigaction.c avr_sigdeliver.c avr_getintstack.c
+CMN_CSRCS += avr_getintstack.c
 CMN_CSRCS += avr_stackframe.c avr_switchcontext.c avr_usestack.c
 
 # Configuration-dependent common files
 
+ifeq ($(CONFIG_ENABLE_ALL_SIGNALS),y)
+CMN_CSRCS += avr_schedulesigaction.c avr_sigdeliver.c
+endif
+
 ifeq ($(CONFIG_AVR_SPI),y)
 CMN_CSRCS += avr_spi.c
 endif