diff --git a/scripts/check_for_tabs.sh b/scripts/check_for_tabs.sh
index 21b86d1..a075703 100755
--- a/scripts/check_for_tabs.sh
+++ b/scripts/check_for_tabs.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-if grep -H -n '\t' *.scad ; then
+if grep -H -n -P '\t' *.scad ; then
     echo "Tabs found in source code." 2>&1
     exit 1
 fi