diff --git a/man/man1/raidz_test.1 b/man/man1/raidz_test.1
index 4283a4b527..5281d2b86d 100644
--- a/man/man1/raidz_test.1
+++ b/man/man1/raidz_test.1
@@ -40,7 +40,7 @@
 The purpose of this tool is to run all supported raidz implementation and verify
 the results of all methods.
 It also contains a parameter sweep option where all
-parameters affecting a RAIDZ block are verified (like ashift size, data offset,
+parameters affecting a RAID-Z block are verified (like ashift size, data offset,
 data size, etc.).
 The tool also supports a benchmarking mode using the
 .Fl B