diff --git a/todo.sh b/todo.sh
index 7e75ceb..25078fb 100755
--- a/todo.sh
+++ b/todo.sh
@@ -467,6 +467,9 @@ OVR_TODOTXT_DEFAULT_ACTION="$TODOTXT_DEFAULT_ACTION"
 OVR_TODOTXT_SORT_COMMAND="$TODOTXT_SORT_COMMAND"
 OVR_TODOTXT_FINAL_FILTER="$TODOTXT_FINAL_FILTER"
 
+# Prevent GREP_OPTIONS from malforming grep's output
+GREP_OPTIONS=""
+
 # == PROCESS OPTIONS ==
 while getopts ":fhpcnNaAtTvVx+@Pd:" Option
 do