diff --git a/data/generators/compare-ols-pca.sh b/data/generators/compare-ols-pca.sh
index 22219ffc0..373af4de1 100644
--- a/data/generators/compare-ols-pca.sh
+++ b/data/generators/compare-ols-pca.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 for p in \
   -0.975 -0.950 -0.925 -0.900 \