diff --git a/documentation/bugs.sgml b/documentation/bugs.sgml
index 79607720cda..b493102d9ac 100644
--- a/documentation/bugs.sgml
+++ b/documentation/bugs.sgml
@@ -360,7 +360,7 @@
              <listitem>
              <para>
                Separate the last 100 lines to another file using
-               <command> tail </command>.
+               <command>tail</command>.
              </para>
              </listitem>
            </orderedlist>
@@ -388,7 +388,7 @@
              <listitem>
              <screen>
 <prompt>$ </prompt>wine -debugmsg +relay [other_options] program_name |& tee filename.out;
-<prompt>$ </prompt>tail -100 filename.out > report_file
+<prompt>$ </prompt>tail -n 100 filename.out > report_file
              </screen>
              </listitem>
              </varlistentry>
@@ -397,7 +397,7 @@
              <listitem>
              <screen>
 <prompt>$ </prompt>wine -debugmsg +relay [other_options] program_name 2>&1 | tee filename.out;
-<prompt>$ </prompt>tail -100 filename.out > report_file
+<prompt>$ </prompt>tail -n 100 filename.out > report_file
              </screen>
              </listitem>
              </varlistentry>
diff --git a/tools/testrun b/tools/testrun
index ac256e061a0..831a82aa972 100755
--- a/tools/testrun
+++ b/tools/testrun
@@ -266,8 +266,8 @@ while ($exe=<FIND>) {
 	alarm(1000);# so it doesn't trigger in the diff, kill or find.
 
 	system("touch $cwd/runs/${runfile}.out");
-	system("$diff $cwd/runs/${runfile}.out $cwd/${runfile}.out|head -$trunclines");
-	system("head -$trunclines $cwd/${runfile}.out >$cwd/runs/${runfile}.out");
+	system("$diff $cwd/runs/${runfile}.out $cwd/${runfile}.out|head -n $trunclines");
+	system("head -n $trunclines $cwd/${runfile}.out >$cwd/runs/${runfile}.out");
 	unlink("$cwd/${runfile}.out");
 	&kill_subprocesses;
 	&cleanup_wine_ipc;