diff --git a/cli/command_snapshot_create.go b/cli/command_snapshot_create.go
index 96f7b25d5..395a250a4 100644
--- a/cli/command_snapshot_create.go
+++ b/cli/command_snapshot_create.go
@@ -55,7 +55,7 @@ func (c *commandSnapshotCreate) setup(svc appServices, parent commandParent) {
 	cmd := parent.Command("create", "Creates a snapshot of local directory or file.")
 
 	cmd.Arg("source", "Files or directories to create snapshot(s) of.").StringsVar(&c.snapshotCreateSources)
-	cmd.Flag("all", "Create snapshots for files or directories previously backed up by this user on this computer").BoolVar(&c.snapshotCreateAll)
+	cmd.Flag("all", "Create snapshots for files or directories previously backed up by this user on this computer. Cannot be used when a source path argument is also specified.").BoolVar(&c.snapshotCreateAll)
 	cmd.Flag("upload-limit-mb", "Stop the backup process after the specified amount of data (in MB) has been uploaded.").PlaceHolder("MB").Default("0").Int64Var(&c.snapshotCreateCheckpointUploadLimitMB)
 	cmd.Flag("checkpoint-interval", "Interval between periodic checkpoints (must be <= 45 minutes).").Hidden().DurationVar(&c.snapshotCreateCheckpointInterval)
 	cmd.Flag("description", "Free-form snapshot description.").StringVar(&c.snapshotCreateDescription)
@@ -89,6 +89,10 @@ func (c *commandSnapshotCreate) setup(svc appServices, parent commandParent) {
 func (c *commandSnapshotCreate) run(ctx context.Context, rep repo.RepositoryWriter) error {
 	sources := c.snapshotCreateSources
 
+	if c.snapshotCreateAll && len(sources) > 0 {
+		return errors.New("cannot use --all when a source path argument is specified")
+	}
+
 	if err := maybeAutoUpgradeRepository(ctx, rep); err != nil {
 		return errors.Wrap(err, "error upgrading repository")
 	}
diff --git a/tests/end_to_end_test/snapshot_create_test.go b/tests/end_to_end_test/snapshot_create_test.go
index a8c4539dd..2ec4a2376 100644
--- a/tests/end_to_end_test/snapshot_create_test.go
+++ b/tests/end_to_end_test/snapshot_create_test.go
@@ -783,3 +783,19 @@ func TestSnapshotCreateAllSnapshotPath(t *testing.T) {
 		require.Equal(t, "/foo/bar", si[2].Path)
 	}
 }
+
+func TestSnapshotCreateWithAllAndPath(t *testing.T) {
+	t.Parallel()
+
+	runner := testenv.NewInProcRunner(t)
+	e := testenv.NewCLITest(t, testenv.RepoFormatNotImportant, runner)
+
+	defer e.RunAndExpectSuccess(t, "repo", "disconnect")
+
+	e.RunAndExpectSuccess(t, "repo", "create", "filesystem", "--path", e.RepoDir)
+
+	// creating a snapshot with a directory and --all should fail
+	e.RunAndExpectSuccess(t, "snapshot", "create", sharedTestDataDir1)
+	e.RunAndExpectSuccess(t, "snapshot", "create", sharedTestDataDir2)
+	e.RunAndExpectFailure(t, "snapshot", "create", sharedTestDataDir1, "--all")
+}