diff --git a/CMakeLists.txt b/CMakeLists.txt
index c654c892..c406616b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -172,5 +172,7 @@ if(ABSL_ENABLE_INSTALL)
     FILES_MATCHING
       PATTERN "*.inc"
       PATTERN "*.h"
+      PATTERN "copts" EXCLUDE
+      PATTERN "testdata" EXCLUDE
   )
 endif()  # ABSL_ENABLE_INSTALL