diff --git a/.gitlab-ci/build/gitlab-ci.yml b/.gitlab-ci/build/gitlab-ci.yml
index 8a76635cc85..ae5f5290780 100644
--- a/.gitlab-ci/build/gitlab-ci.yml
+++ b/.gitlab-ci/build/gitlab-ci.yml
@@ -401,7 +401,6 @@ debian-clang:
       -Wno-error=unused-function
     CPP_ARGS: >
       -Wno-error=c99-designator
-      -Wno-error=deprecated-declarations
       -Wno-error=implicit-const-int-float-conversion
       -Wno-error=missing-braces
       -Wno-error=overloaded-virtual