diff --git a/components/fatfs/test/CMakeLists.txt b/components/fatfs/test/CMakeLists.txt
index c3596a0f4..614374216 100644
--- a/components/fatfs/test/CMakeLists.txt
+++ b/components/fatfs/test/CMakeLists.txt
@@ -3,7 +3,7 @@ if(IDF_TARGET STREQUAL "esp32")
     list(APPEND srcdirs "esp32")
 endif()
 
-idf_component_register(SRC_DIRS ${src_dirs}
+idf_component_register(SRC_DIRS ${srcdirs}
                        INCLUDE_DIRS .
                        REQUIRES unity test_utils vfs fatfs
                        EMBED_TXTFILES fatfs.img