diff --git a/soc/xtensa/intel_adsp/common/soc_mp.c b/soc/xtensa/intel_adsp/common/soc_mp.c
index ee6792fdda0..5c0b811a7ee 100644
--- a/soc/xtensa/intel_adsp/common/soc_mp.c
+++ b/soc/xtensa/intel_adsp/common/soc_mp.c
@@ -51,7 +51,9 @@ LOG_MODULE_REGISTER(soc_mp, CONFIG_SOC_LOG_LEVEL);
 
 #define IDC_MSG_POWER_UP_EXT(x)	IDC_EXTENSION((x) >> 2)
 
+#ifdef CONFIG_IPM_CAVS_IDC
 static const struct device *idc;
+#endif
 
 extern void __start(void);