diff --git a/lib/libpmc/pmc_read.3 b/lib/libpmc/pmc_read.3
index 6056feac2538..d9fa3ce8b9c2 100644
--- a/lib/libpmc/pmc_read.3
+++ b/lib/libpmc/pmc_read.3
@@ -30,7 +30,7 @@
 .Nm pmc_read ,
 .Nm pmc_rw ,
 .Nm pmc_write ,
-.Nd read and write hardware performace counters
+.Nd read and write hardware performance counters
 .Sh LIBRARY
 .Lb libpmc
 .Sh SYNOPSIS
@@ -62,7 +62,7 @@ Function
 .Fn pmc_rw
 combines a read and a write into a single atomic operation.
 .Pp
-For write operations the PMC should be a quiesced state.
+For write operations the PMC should be a quiescent state.
 .Sh RETURN VALUES
 .Rv -std
 .Sh ERRORS