diff --git a/spectral/Kbuild b/spectral/Kbuild
index da3841f3e626..df29021b3e17 100644
--- a/spectral/Kbuild
+++ b/spectral/Kbuild
@@ -79,6 +79,7 @@ INCS += -I$(obj)/$(DEPTH)/include -I$(obj)/$(DEPTH)/umac/include \
         -I$(obj)/$(DEPTH)/cmn_dev/qdf/inc \
         -I$(obj)/$(DEPTH)/cmn_dev/qdf/linux/src \
         -I$(obj)/$(DEPTH)/cmn_dev/qal/inc \
+        -I$(obj)/$(DEPTH)/cmn_dev/qal/linux/src \
         -I$(obj)/$(DEPTH)/cmn_dev/hif \
         -I$(obj)/$(DEPTH)/cmn_dev/hif/inc \
         -I$(obj)/$(DEPTH)/cmn_dev/hif/src \