diff --git a/soc/silabs/common/CMakeLists.txt b/soc/silabs/common/CMakeLists.txt
index a3e08c2fce1..7d1ed736667 100644
--- a/soc/silabs/common/CMakeLists.txt
+++ b/soc/silabs/common/CMakeLists.txt
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: Apache-2.0
 
-if(SOC_FAMILY_SILABS_S0 OR SOC_FAMILY_SILABS_S1 OR SOC_FAMILY_SILABS_S2)
+if(CONFIG_SOC_FAMILY_SILABS_S0 OR CONFIG_SOC_FAMILY_SILABS_S1 OR CONFIG_SOC_FAMILY_SILABS_S2)
   zephyr_sources(soc.c)
 endif()