diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9520799..2801d6e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,7 +29,8 @@ add_library(crc32 SHARED
     ${CRC32_SOURCES}
 )
 
-include_directories(libcrc-2.0/include)
+target_include_directories(crc16 PRIVATE libcrc-2.0/include)
+target_include_directories(crc32 PRIVATE libcrc-2.0/include)
 
 install(TARGETS crc16 DESTINATION share/checkbrute/plugins)
 install(TARGETS crc32 DESTINATION share/checkbrute/plugins)