diff --git a/CMakeLists.txt b/CMakeLists.txt
index 71b601e..440aa27 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,9 +38,9 @@ set(_INSTALL_DESTINATIONS
 	ARCHIVE DESTINATION lib${LIB_SUFFIX}
 )
 #
-file(GLOB public_headers include/*.h)
-file(GLOB private_headers src/*.h)
-file(GLOB sources src/*.cpp)
+file(GLOB public_headers include/[a-z]*.h)
+file(GLOB private_headers src/[a-z]*.h)
+file(GLOB sources src/[a-z]*.cpp)
 
 include_directories(${YAML_CPP_SOURCE_DIR}/include)
 add_library(yaml-cpp
diff --git a/yaml-reader/CMakeLists.txt b/yaml-reader/CMakeLists.txt
index f2c3ce2..2b58180 100644
--- a/yaml-reader/CMakeLists.txt
+++ b/yaml-reader/CMakeLists.txt
@@ -1,5 +1,5 @@
-file(GLOB yaml-reader_headers *.h)
-file(GLOB yaml-reader_sources *.cpp)
+file(GLOB yaml-reader_headers [a-z]*.h)
+file(GLOB yaml-reader_sources [a-z]*.cpp)
 
 add_executable(yaml-reader
 	${yaml-reader_sources}