diff --git a/crit/cli/cli.go b/crit/cli/cli.go
index 12b692748..0fbc380d0 100644
--- a/crit/cli/cli.go
+++ b/crit/cli/cli.go
@@ -220,9 +220,9 @@ var infoCmd = &cobra.Command{
 
 // The `crit x` command
 var xCmd = &cobra.Command{
-	Use:   "x DIR {ps|fds|mems|rss}",
+	Use:   "x DIR {ps|fd|mem|rss}",
 	Short: "Explore the image directory",
-	Long:  "Explore the image directory with one of (ps, fds, mems, rss) options",
+	Long:  "Explore the image directory with one of (ps, fd, mem, rss) options",
 	// Exactly two arguments are required:
 	// * Path of the input directory
 	// * Explore type
@@ -242,14 +242,14 @@ var xCmd = &cobra.Command{
 		switch args[1] {
 		case "ps":
 			xData, err = c.ExplorePs()
-		case "fds":
+		case "fd":
 			xData, err = c.ExploreFds()
-		case "mems":
+		case "mem":
 			xData, err = c.ExploreMems()
 		case "rss":
 			xData, err = c.ExploreRss()
 		default:
-			err = errors.New("error exploring directory: invalid explore type")
+			err = errors.New("invalid explore type (supported: {ps|fd|mem|rss})")
 		}
 		if err != nil {
 			log.Fatal(fmt.Errorf("error exploring directory: %w", err))
diff --git a/crit/explore.go b/crit/explore.go
index 3d2b98799..cd234e585 100644
--- a/crit/explore.go
+++ b/crit/explore.go
@@ -71,7 +71,7 @@ func (c *crit) ExplorePs() (*PsTree, error) {
 // Fd represents the file descriptors opened in a single process
 type Fd struct {
 	PId   uint32  `json:"pId"`
-	Files []*File `json:"files,omitempty"`
+	Files []*File `json:"files"`
 }
 
 // File represents a single opened file
@@ -145,6 +145,11 @@ func (c *crit) ExploreFds() ([]*Fd, error) {
 			Path: filePath,
 		})
 
+		// Omit if the process has no file descriptors
+		if len(fdEntry.Files) == 0 {
+			continue
+		}
+
 		fds = append(fds, &fdEntry)
 	}
 
diff --git a/crit/utils.go b/crit/utils.go
index f76c3a7df..5fa817a43 100644
--- a/crit/utils.go
+++ b/crit/utils.go
@@ -44,13 +44,13 @@ func ReadMagic(f *os.File) (string, error) {
 
 // Helper to convert bytes into a more readable unit
 func countBytes(n int64) string {
-	const UNIT int64 = 1024
-	if n < UNIT {
+	const unit int64 = 1024
+	if n < unit {
 		return fmt.Sprint(n, " B")
 	}
-	div, exp := UNIT, 0
-	for i := n / UNIT; i >= UNIT; i /= UNIT {
-		div *= UNIT
+	div, exp := unit, 0
+	for i := n / unit; i >= unit; i /= unit {
+		div *= unit
 		exp++
 	}
 	return fmt.Sprintf("%.1f %cB", float64(n)/float64(div), "KMGTPE"[exp])
@@ -152,7 +152,7 @@ func getRegFilePath(dir string, file *fdinfo.FileEntry, fID uint32) (string, err
 		if file.GetReg() != nil {
 			return file.GetReg().GetName(), nil
 		}
-		return "Unknown path", nil
+		return "unknown", nil
 	}
 
 	if regImg == nil {
@@ -168,7 +168,7 @@ func getRegFilePath(dir string, file *fdinfo.FileEntry, fID uint32) (string, err
 		}
 	}
 
-	return "Unknown path", nil
+	return "unknown", nil
 }
 
 // Helper to get file path of pipe files
diff --git a/test/crit/crit-test.sh b/test/crit/crit-test.sh
index e89102827..7fddde690 100755
--- a/test/crit/crit-test.sh
+++ b/test/crit/crit-test.sh
@@ -73,8 +73,8 @@ function command_test {
 
 	# explore image directory
 	$CRIT x "$TEST_IMG_DIR" ps || exit 1
-	$CRIT x "$TEST_IMG_DIR" fds || exit 1
-	$CRIT x "$TEST_IMG_DIR" mems || exit 1
+	$CRIT x "$TEST_IMG_DIR" fd || exit 1
+	$CRIT x "$TEST_IMG_DIR" mem || exit 1
 	$CRIT x "$TEST_IMG_DIR" rss || exit 1
 }
 
diff --git a/test/loop/loop.c b/test/loop/loop.c
index 736e7f8cb..733caad4c 100644
--- a/test/loop/loop.c
+++ b/test/loop/loop.c
@@ -35,7 +35,7 @@ int main(void)
 			exit(1);
 		}
 
-		// Create a file descriptor for "crit x ./ fds" test
+		// Create a file descriptor for "crit x ./ fd" test
 		open("/dev/null", O_RDONLY);
 
 		chdir("/");