diff --git a/libs/libc/string/CMakeLists.txt b/libs/libc/string/CMakeLists.txt
index 7d7e216f07..aa25dc5ad6 100644
--- a/libs/libc/string/CMakeLists.txt
+++ b/libs/libc/string/CMakeLists.txt
@@ -58,6 +58,7 @@ set(SRCS
     lib_strerrorr.c
     lib_explicit_bzero.c
     lib_strsignal.c
+    lib_timingsafe_bcmp.c
     lib_index.c
     lib_rindex.c)