diff --git a/directiv.pl b/directiv.pl
index 684f542a..0417f565 100755
--- a/directiv.pl
+++ b/directiv.pl
@@ -95,7 +95,7 @@ if ($output eq 'h') {
     }
 
     @hashinfo = gen_perfect_hash(\%directive);
-    if (!defined(@hashinfo)) {
+    if (!@hashinfo) {
 	die "$0: no hash found\n";
     }
 
diff --git a/perllib/phash.ph b/perllib/phash.ph
index 5bc2744a..936978a5 100644
--- a/perllib/phash.ph
+++ b/perllib/phash.ph
@@ -161,7 +161,7 @@ sub gen_perfect_hash($) {
 	for ($j = 0; $j < $maxj; $j++) {
 	    $sv = $random_sv_vectors[$j];
 	    @hashinfo = gen_hash_n($n, $sv, $href, $run++);
-	    return @hashinfo if (defined(@hashinfo));
+	    return @hashinfo if (@hashinfo);
 	}
 	$n <<= 1;
     }
diff --git a/phash.pl b/phash.pl
index cc9ca741..3ef6e714 100755
--- a/phash.pl
+++ b/phash.pl
@@ -75,7 +75,7 @@ sub main() {
     %data = read_input();
     @hashinfo = gen_perfect_hash(\%data);
 
-    if (!defined(@hashinfo)) {
+    if (!@hashinfo) {
 	die "$0: no hash found\n";
     }
 
diff --git a/pptok.pl b/pptok.pl
index c9738d37..be85b942 100755
--- a/pptok.pl
+++ b/pptok.pl
@@ -164,7 +164,7 @@ if ($what eq 'c') {
     }
 
     my @hashinfo = gen_perfect_hash(\%tokens);
-    if (!defined(@hashinfo)) {
+    if (!@hashinfo) {
 	die "$0: no hash found\n";
     }
 
diff --git a/tokhash.pl b/tokhash.pl
index 0c69c034..6c058026 100755
--- a/tokhash.pl
+++ b/tokhash.pl
@@ -183,7 +183,7 @@ if ($output eq 'h') {
     #
 
     @hashinfo = gen_perfect_hash(\%tokens);
-    if (!defined(@hashinfo)) {
+    if (!@hashinfo) {
 	die "$0: no hash found\n";
     }