diff --git a/pkgs/misc/tex/nix/animatedot.sh b/pkgs/misc/tex/nix/animatedot.sh
index da4bb00c176..fadd490a5d9 100644
--- a/pkgs/misc/tex/nix/animatedot.sh
+++ b/pkgs/misc/tex/nix/animatedot.sh
@@ -2,7 +2,7 @@
 
 ensureDir $out
 
-for i in $(seq 1 $nrFrames); do
+for ((i = 1; i <= $nrFrames; i++)); do
     echo "producing frame $i...";
     targetName=$out/$(basename $(stripHash $dotGraph; echo $strippedName) .dot)-f-$i.dot
     cpp -DFRAME=$i < $dotGraph > $targetName