diff --git a/pkg/transformers/senml/transformer.go b/pkg/transformers/senml/transformer.go
index ed192690ea..a4098c9e5c 100644
--- a/pkg/transformers/senml/transformer.go
+++ b/pkg/transformers/senml/transformer.go
@@ -19,7 +19,7 @@ const (
 
 var (
 	errDecode    = errors.New("failed to decode senml")
-	errNormalize = errors.New("faled to normalize senml")
+	errNormalize = errors.New("failed to normalize senml")
 )
 
 var formats = map[string]senml.Format{
diff --git a/readers/cassandra/messages.go b/readers/cassandra/messages.go
index 11d373032e..876ec5096b 100644
--- a/readers/cassandra/messages.go
+++ b/readers/cassandra/messages.go
@@ -12,7 +12,7 @@ import (
 	"github.com/mainflux/mainflux/readers"
 )
 
-var errReadMessages = errors.New("faled to read messages from cassandra database")
+var errReadMessages = errors.New("failed to read messages from cassandra database")
 
 var _ readers.MessageRepository = (*cassandraRepository)(nil)
 
diff --git a/readers/influxdb/messages.go b/readers/influxdb/messages.go
index 1f6e45cf00..1f58899615 100644
--- a/readers/influxdb/messages.go
+++ b/readers/influxdb/messages.go
@@ -17,7 +17,7 @@ import (
 
 const countCol = "count"
 
-var errReadMessages = errors.New("faled to read messages from influxdb database")
+var errReadMessages = errors.New("failed to read messages from influxdb database")
 
 var _ readers.MessageRepository = (*influxRepository)(nil)
 
diff --git a/readers/mongodb/messages.go b/readers/mongodb/messages.go
index 1a4970eb0d..f79d708740 100644
--- a/readers/mongodb/messages.go
+++ b/readers/mongodb/messages.go
@@ -16,7 +16,7 @@ import (
 
 const collection = "mainflux"
 
-var errReadMessages = errors.New("faled to read messages from mongodb database")
+var errReadMessages = errors.New("failed to read messages from mongodb database")
 
 var _ readers.MessageRepository = (*mongoRepository)(nil)
 
diff --git a/readers/postgres/messages.go b/readers/postgres/messages.go
index d4131ae3fb..9f23d6d398 100644
--- a/readers/postgres/messages.go
+++ b/readers/postgres/messages.go
@@ -14,7 +14,7 @@ import (
 
 const errInvalid = "invalid_text_representation"
 
-var errReadMessages = errors.New("faled to read messages from postgres database")
+var errReadMessages = errors.New("failed to read messages from postgres database")
 
 var _ readers.MessageRepository = (*postgresRepository)(nil)
 
diff --git a/writers/cassandra/messages.go b/writers/cassandra/messages.go
index 4a5003bcfb..937eca4c94 100644
--- a/writers/cassandra/messages.go
+++ b/writers/cassandra/messages.go
@@ -10,7 +10,7 @@ import (
 	"github.com/mainflux/mainflux/writers"
 )
 
-var errSaveMessage = errors.New("faled to save message to cassandra database")
+var errSaveMessage = errors.New("failed to save message to cassandra database")
 
 var _ writers.MessageRepository = (*cassandraRepository)(nil)
 
diff --git a/writers/influxdb/messages.go b/writers/influxdb/messages.go
index 7a27b923d9..7085493d80 100644
--- a/writers/influxdb/messages.go
+++ b/writers/influxdb/messages.go
@@ -17,7 +17,7 @@ import (
 
 const pointName = "messages"
 
-var errSaveMessage = errors.New("faled to save message to influxdb database")
+var errSaveMessage = errors.New("failed to save message to influxdb database")
 
 var _ writers.MessageRepository = (*influxRepo)(nil)
 
diff --git a/writers/mongodb/messages.go b/writers/mongodb/messages.go
index f08a2a5fa5..9c80524e04 100644
--- a/writers/mongodb/messages.go
+++ b/writers/mongodb/messages.go
@@ -15,7 +15,7 @@ import (
 
 const collectionName string = "mainflux"
 
-var errSaveMessage = errors.New("faled to save message to mongodb database")
+var errSaveMessage = errors.New("failed to save message to mongodb database")
 
 var _ writers.MessageRepository = (*mongoRepo)(nil)