diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c8f42666..887c1f0b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-file(GLOB_RECURSE INC_FILES ../include/*.h)
+file(GLOB_RECURSE INC_FILES ../include/*.hpp)
 file(GLOB_RECURSE SRC_FILES *.cpp)
 
 include_directories(../include)