diff --git a/src/CalcManager/CMakeLists.txt b/src/CalcManager/CMakeLists.txt
index 8043dfa5..c02bc78d 100644
--- a/src/CalcManager/CMakeLists.txt
+++ b/src/CalcManager/CMakeLists.txt
@@ -1,4 +1,10 @@
-add_library(CalcManager)
+add_library(CalcManager
+	CalculatorHistory.cpp
+	CalculatorManager.cpp
+	ExpressionCommand.cpp
+	pch.cpp
+	UnitConverter.cpp
+)
 target_include_directories(CalcManager PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 
 add_subdirectory(Ratpack)