diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 64a1c6b..d699085 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -14,7 +14,8 @@ set(CORE_SOURCES
     sale.cpp
     marketplace.cpp
     excelreader.cpp
-    jsonutil
+    jsonutil.cpp
+    utils.cpp
 )
 
 add_library(core STATIC ${CORE_SOURCES})