diff --git a/components/esp_hw_support/test_apps/esp_hw_support_unity_tests/main/CMakeLists.txt b/components/esp_hw_support/test_apps/esp_hw_support_unity_tests/main/CMakeLists.txt
index 5d29e8ed6f..bc5e4d3423 100644
--- a/components/esp_hw_support/test_apps/esp_hw_support_unity_tests/main/CMakeLists.txt
+++ b/components/esp_hw_support/test_apps/esp_hw_support_unity_tests/main/CMakeLists.txt
@@ -22,7 +22,7 @@ if(CONFIG_SOC_ETM_SUPPORTED)
 endif()
 
 if(CONFIG_SOC_GPTIMER_SUPPORTED)
-    list(APPEND SRC "test_intr_alloc.c")
+    list(APPEND srcs "test_intr_alloc.c")
 endif()
 
 # In order for the cases defined by `TEST_CASE` to be linked into the final elf,