diff --git a/test/testsuite.sh b/test/testsuite.sh
index edd870d..37fe1fd 100755
--- a/test/testsuite.sh
+++ b/test/testsuite.sh
@@ -72,18 +72,18 @@ checkutils()
             # We don't include grep or sed when the input is not text, because
             # they put a newline at the end of their input if it was not there
             # initially. (Linux sed doesn't, but OS X sed does.)
-            check "$ZZOPTS" "head -- -n 9999 $file" "head -n 9999"
-            check "$ZZOPTS" "tail -- -n 9999 $file" "tail -n 9999"
-            check "$ZZOPTS" "tail -- -n +1 $file" "tail -n +1"
-            check "$ZZOPTS" "grep -- -a '' $file" "grep -a ''"
-            check "$ZZOPTS" "sed -- -e n $file" "sed -e n"
-            #check "$ZZOPTS" "cut -- -b1- $file" "cut -b1-"
-            check "$ZZOPTS" "-i head -- -n 9999 < $file" "|head -n 9999"
-            check "$ZZOPTS" "-i tail -- -n 9999 < $file" "|tail -n 9999"
-            check "$ZZOPTS" "-i tail -- -n +1 < $file" "|tail -n +1"
-            check "$ZZOPTS" "-i grep -- -a '' < $file" "|grep -a ''"
-            check "$ZZOPTS" "-i sed -- -e n < $file" "|sed -e n"
-            #check "$ZZOPTS" "-i cut -- -b1- < $file" "|cut -b1-"
+            check "$ZZOPTS" "head -n 9999 $file" "head -n 9999"
+            check "$ZZOPTS" "tail -n 9999 $file" "tail -n 9999"
+            check "$ZZOPTS" "tail -n +1 $file" "tail -n +1"
+            check "$ZZOPTS" "grep -a '' $file" "grep -a ''"
+            check "$ZZOPTS" "sed -e n $file" "sed -e n"
+            #check "$ZZOPTS" "cut -b1- $file" "cut -b1-"
+            check "$ZZOPTS" "-i head -n 9999 < $file" "|head -n 9999"
+            check "$ZZOPTS" "-i tail -n 9999 < $file" "|tail -n 9999"
+            check "$ZZOPTS" "-i tail -n +1 < $file" "|tail -n +1"
+            check "$ZZOPTS" "-i grep -a '' < $file" "|grep -a ''"
+            check "$ZZOPTS" "-i sed -e n < $file" "|sed -e n"
+            #check "$ZZOPTS" "-i cut -b1- < $file" "|cut -b1-"
             ;;
         esac
     done