diff --git a/Makefile.am b/Makefile.am
index 020fa7a..6689589 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -17,8 +17,8 @@ ACLOCAL_AMFLAGS = -I m4
 
 .PHONY: test
 test:
-	perl -MTest::Harness -e '$$Test::Harness::verbose=0; runtests @ARGV;' tests/*.pl
+	perl -MTest::Harness -e '$$Test::Harness::verbose=0; runtests @ARGV;' tests/*.t.pl
 
 .PHONY: test-verbose
 test-verbose:
-	perl -MTest::Harness -e '$$Test::Harness::verbose=1; runtests @ARGV;' tests/*.pl
+	perl -MTest::Harness -e '$$Test::Harness::verbose=1; runtests @ARGV;' tests/*.t.pl
diff --git a/tests/common.inc b/tests/common.pl
old mode 100644
new mode 100755
similarity index 100%
rename from tests/common.inc
rename to tests/common.pl
diff --git a/tests/normal.pl b/tests/normal.t.pl
old mode 100644
new mode 100755
similarity index 99%
rename from tests/normal.pl
rename to tests/normal.t.pl
index 572ef03..7f0d779
--- a/tests/normal.pl
+++ b/tests/normal.t.pl
@@ -8,7 +8,7 @@ use File::Copy;
 use File::Temp;
 use IO::Handle;
 
-require("tests/common.inc");
+require("tests/common.pl");
 
 my $tempDir = $ENV{'TMPDIR'} || "/tmp";
 
diff --git a/tests/reverse.pl b/tests/reverse.t.pl
similarity index 99%
rename from tests/reverse.pl
rename to tests/reverse.t.pl
index 2c073e8..35a98b8 100755
--- a/tests/reverse.pl
+++ b/tests/reverse.t.pl
@@ -9,7 +9,7 @@ use File::Temp;
 use IO::Handle;
 use Errno qw(EROFS);
 
-require("tests/common.inc");
+require("tests/common.pl");
 
 my $tempDir = $ENV{'TMPDIR'} || "/tmp";