diff --git a/pkg/obitools/obiclean/options.go b/pkg/obitools/obiclean/options.go
index a98afee..c7fb042 100644
--- a/pkg/obitools/obiclean/options.go
+++ b/pkg/obitools/obiclean/options.go
@@ -42,7 +42,7 @@ func ObicleanOptionSet(options *getoptions.GetOpt) {
 
 	options.BoolVar(&_onlyHead, "head", _onlyHead,
 		options.Alias("H"),
-		options.Description("Select only sequences with the head status in a least one sample."),
+		options.Description("Select only sequences with the head status in at least one sample."),
 	)
 
 	options.StringVar(&_saveGraph, "save-graph", _saveGraph,
diff --git a/pkg/obitools/obiconvert/options.go b/pkg/obitools/obiconvert/options.go
index 57a86d9..5cfb747 100644
--- a/pkg/obitools/obiconvert/options.go
+++ b/pkg/obitools/obiconvert/options.go
@@ -49,7 +49,7 @@ func InputOptionSet(options *getoptions.GetOpt) {
 		options.Description("Decodes quality string according to the Solexa specification."))
 
 	options.BoolVar(&__no_ordered_input__, "no-order", __no_ordered_input__,
-		options.Description("When several imput files are provided, "+
+		options.Description("When several input files are provided, "+
 			"indicates that there is no order among them."))
 
 }