diff --git a/techpack/audio/ipc/Kbuild b/techpack/audio/ipc/Kbuild
index f6a67fa..cfed23c 100644
--- a/techpack/audio/ipc/Kbuild
+++ b/techpack/audio/ipc/Kbuild
@@ -236,4 +236,4 @@ obj-$(CONFIG_WCD_DSP_GLINK) += wglink_dlkm.o
 wglink_dlkm-y := $(WDSP_GLINK)
 
 # inject some build related information
-CDEFINES += -DBUILD_TIMESTAMP=\"$(shell date -u +'%Y-%m-%dT%H:%M:%SZ')\"
+DEFINES += -DBUILD_TIMESTAMP=\"$(shell date -u +'%Y-%m-%dT%H:%M:%SZ')\"