diff --git a/sys-libs/glibc/glibc-2.34-r4.ebuild b/sys-libs/glibc/glibc-2.34-r4.ebuild
index ee3c1a744ba7d..2a827a3494aa6 100644
--- a/sys-libs/glibc/glibc-2.34-r4.ebuild
+++ b/sys-libs/glibc/glibc-2.34-r4.ebuild
@@ -425,7 +425,6 @@ setup_flags() {
 
 	# #829583
 	filter-lfs-flags
-	filter-flags -D_TIME_BITS=64
 
 	unset CBUILD_OPT CTARGET_OPT
 	if use multilib ; then
diff --git a/sys-libs/glibc/glibc-9999.ebuild b/sys-libs/glibc/glibc-9999.ebuild
index a9caa901cd6f0..2cb4bf86808c8 100644
--- a/sys-libs/glibc/glibc-9999.ebuild
+++ b/sys-libs/glibc/glibc-9999.ebuild
@@ -417,7 +417,6 @@ setup_flags() {
 
 	# #829583
 	filter-lfs-flags
-	filter-flags -D_TIME_BITS=64
 
 	unset CBUILD_OPT CTARGET_OPT
 	if use multilib ; then