diff --git a/samples/nanokernel/apps/adc/prj_x86.conf b/samples/nanokernel/apps/adc/prj_x86.conf
index 65f008ef911..7428c6f9fe0 100644
--- a/samples/nanokernel/apps/adc/prj_x86.conf
+++ b/samples/nanokernel/apps/adc/prj_x86.conf
@@ -1,4 +1,2 @@
-CONFIG_PCI_DEBUG=y
-
 CONFIG_ADC=y
 CONFIG_ADC_DEBUG=y