diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index f5b3754..515a645 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -21,6 +21,11 @@ jobs:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
 
+    - name: Lint code
+      uses: golangci/golangci-lint-action@v2
+      with:
+        version: v4.0.0
+
     - name: Get dependencies
       run: go mod download
 
diff --git a/zfs/Snapshot.go b/zfs/Snapshot.go
index 6f60297..27f6995 100644
--- a/zfs/Snapshot.go
+++ b/zfs/Snapshot.go
@@ -17,10 +17,8 @@ type (
 	}
 )
 
-var (
-	// ErrMalformedLine will be returned if output from zfs is unusable.
-	ErrMalformedLine = errors.New("broken line")
-)
+// ErrMalformedLine will be returned if output from zfs is unusable.
+var ErrMalformedLine = errors.New("broken line")
 
 // NewSnapshotFromLine will try to parse a line from "zfs list" and instantiate
 // a new Snapshot.
diff --git a/zfs/SnapshotList_test.go b/zfs/SnapshotList_test.go
index 1d2f550..1d37ed5 100644
--- a/zfs/SnapshotList_test.go
+++ b/zfs/SnapshotList_test.go
@@ -265,27 +265,32 @@ func TestSieve(t *testing.T) {
 			true, true, true, true, true,
 			true, true, true, true, true,
 			false, true, true, true, true,
-			true, true}},
+			true, true,
+		}},
 		{time.Unix(0, 0), 5 * time.Second, []bool{
 			true, true, true, true, true,
 			false, true, true, true, false,
 			false, true, true, false, true,
-			true, true}},
+			true, true,
+		}},
 		{time.Unix(0, 0), 10 * time.Second, []bool{
 			true, false, true, false, true,
 			false, false, true, false, false,
 			false, true, false, false, true,
-			false, true}},
+			false, true,
+		}},
 		{time.Unix(0, 0), 100 * time.Second, []bool{
 			true, false, false, false, false,
 			false, false, false, false, false,
 			false, false, false, false, false,
-			false, false}},
+			false, false,
+		}},
 		{time.Unix(0, 0), 100000000 * time.Second, []bool{
 			true, false, false, false, false,
 			false, false, false, false, false,
 			false, false, false, false, false,
-			false, false}},
+			false, false,
+		}},
 	}
 
 	for i, c := range cases {