diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
index 48cb21d2..3a987228 100644
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@@ -1,11 +1,11 @@
 if(FSFW_ADD_SPG4_PROPAGATOR)
     target_sources(${LIB_FSFW_NAME} PRIVATE
-        spg4unit.cpp
+        sgp4/sgp4unit.cpp
     )
     target_include_directories(${LIB_FSFW_NAME} PRIVATE
-        ${CMAKE_CURRENT_SOURCE_DIR}/spg4
+        ${CMAKE_CURRENT_SOURCE_DIR}/sgp4
     )
     target_include_directories(${LIB_FSFW_NAME} INTERFACE
-        ${CMAKE_CURRENT_SOURCE_DIR}/spg4
+        ${CMAKE_CURRENT_SOURCE_DIR}/sgp4
     )
 endif()