diff --git a/hosts/bicep/services/mysql/backup.nix b/hosts/bicep/services/mysql/backup.nix
index 17b9f08..1ff47c2 100644
--- a/hosts/bicep/services/mysql/backup.nix
+++ b/hosts/bicep/services/mysql/backup.nix
@@ -56,8 +56,8 @@ in
       rm "$STATE_DIRECTORY/mysql-dump-latest.sql.zst" ||:
       ln -T "$OUT_FILE" "$STATE_DIRECTORY/mysql-dump-latest.sql.zst"
 
-      while [ $(find -type f -printf '.' "$STATE_DIRECTORY" | wc -c) -gt ${toString (rotations + 1)} ]; do
-        rm $(find "$STATE_DIRECTORY" -type f -printf '%T+ %p\n' | sort | head -n 1 | cut -d' ' -f2)
+      while [ "$(find "$STATE_DIRECTORY" -type f -printf '.' | wc -c)" -gt ${toString (rotations + 1)} ]; do
+        rm "$(find "$STATE_DIRECTORY" -type f -printf '%T+ %p\n' | sort | head -n 1 | cut -d' ' -f2)"
       done
     '';
 
diff --git a/hosts/bicep/services/postgresql/backup.nix b/hosts/bicep/services/postgresql/backup.nix
index d9ca01a..9ccc4ef 100644
--- a/hosts/bicep/services/postgresql/backup.nix
+++ b/hosts/bicep/services/postgresql/backup.nix
@@ -57,8 +57,8 @@ in
       rm "$STATE_DIRECTORY/postgresql-dump-latest.sql.zst" ||:
       ln -T "$OUT_FILE" "$STATE_DIRECTORY/postgresql-dump-latest.sql.zst"
 
-      while [ $(find -type f -printf '.' "$STATE_DIRECTORY" | wc -c) -gt ${toString (rotations + 1)} ]; do
-        rm $(find "$STATE_DIRECTORY" -type f -printf '%T+ %p\n' | sort | head -n 1 | cut -d' ' -f2)
+      while [ "$(find "$STATE_DIRECTORY" -type f -printf '.' | wc -c)" -gt ${toString (rotations + 1)} ]; do
+        rm "$(find "$STATE_DIRECTORY" -type f -printf '%T+ %p\n' | sort | head -n 1 | cut -d' ' -f2)"
       done
     '';