diff --git a/.build.yml b/.build.yml
index 9524f52..a9f3668 100644
--- a/.build.yml
+++ b/.build.yml
@@ -22,12 +22,12 @@ tasks:
   - build-gcc: |
       cd tzpfms
       make
-      find out/ -maxdepth 1 -type f -exec readelf -d {} + | tee /dev/stderr | grep Shared | sort | uniq
+      find out/ -maxdepth 1 -type f -exec readelf -d {} + | tee /dev/stderr | grep Shared | LC_ALL=C sort -u
       make clean
   - build-clang: |
       cd tzpfms
       CC=clang CXX=clang++ make
-      find out/ -maxdepth 1 -type f -exec readelf -d {} + | tee /dev/stderr | grep Shared | sort | uniq
+      find out/ -maxdepth 1 -type f -exec readelf -d {} + | tee /dev/stderr | grep Shared | LC_ALL=C sort -u
   - manpages: |
       git -C tzpfms/ worktree add ../tzpfms-man man
       cd tzpfms-man
diff --git a/initrd/install.h b/initrd/install.h
index 46579ae..c0ee7f4 100644
--- a/initrd/install.h
+++ b/initrd/install.h
@@ -32,7 +32,7 @@
 
 	if [ -e /etc/nsswitch.conf ]; then
 		INST_CFG /etc/nsswitch.conf
-		databases="$(awk '/^group|hosts/ {for(i = 2; i <= NF; ++i) print $i}' /etc/nsswitch.conf | sort | uniq)"
+		databases="$(awk '/^group|hosts/ {for(i = 2; i <= NF; ++i) print $i}' /etc/nsswitch.conf | LC_ALL=C sort -u)"
 		for db in $databases; do
 			for f in /lib/*/"libnss_$db"*; do
 				INST_LIB "$f"