diff --git a/server/cmd_hash.go b/server/cmd_hash.go
index fa720db..cb3d752 100644
--- a/server/cmd_hash.go
+++ b/server/cmd_hash.go
@@ -224,7 +224,7 @@ func hmclearCommand(c *client) error {
 
 func hexpireCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 2 {
 		return ErrCmdParams
 	}
 
@@ -244,7 +244,7 @@ func hexpireCommand(c *client) error {
 
 func hexpireAtCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 2 {
 		return ErrCmdParams
 	}
 
@@ -264,7 +264,7 @@ func hexpireAtCommand(c *client) error {
 
 func httlCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 1 {
 		return ErrCmdParams
 	}
 
diff --git a/server/cmd_kv.go b/server/cmd_kv.go
index 9f72b39..1f61f5e 100644
--- a/server/cmd_kv.go
+++ b/server/cmd_kv.go
@@ -205,7 +205,7 @@ func mgetCommand(c *client) error {
 
 func expireCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 2 {
 		return ErrCmdParams
 	}
 
@@ -225,7 +225,7 @@ func expireCommand(c *client) error {
 
 func expireAtCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 2 {
 		return ErrCmdParams
 	}
 
@@ -245,7 +245,7 @@ func expireAtCommand(c *client) error {
 
 func ttlCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 1 {
 		return ErrCmdParams
 	}
 
diff --git a/server/cmd_list.go b/server/cmd_list.go
index c7b1c81..bc059ec 100644
--- a/server/cmd_list.go
+++ b/server/cmd_list.go
@@ -160,7 +160,7 @@ func lmclearCommand(c *client) error {
 
 func lexpireCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 2 {
 		return ErrCmdParams
 	}
 
@@ -180,7 +180,7 @@ func lexpireCommand(c *client) error {
 
 func lexpireAtCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 2 {
 		return ErrCmdParams
 	}
 
@@ -200,7 +200,7 @@ func lexpireAtCommand(c *client) error {
 
 func lttlCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 1 {
 		return ErrCmdParams
 	}
 
diff --git a/server/cmd_zset.go b/server/cmd_zset.go
index bf2fce1..d51c825 100644
--- a/server/cmd_zset.go
+++ b/server/cmd_zset.go
@@ -426,7 +426,7 @@ func zmclearCommand(c *client) error {
 
 func zexpireCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 2 {
 		return ErrCmdParams
 	}
 
@@ -446,7 +446,7 @@ func zexpireCommand(c *client) error {
 
 func zexpireAtCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 2 {
 		return ErrCmdParams
 	}
 
@@ -466,7 +466,7 @@ func zexpireAtCommand(c *client) error {
 
 func zttlCommand(c *client) error {
 	args := c.args
-	if len(args) == 0 {
+	if len(args) != 1 {
 		return ErrCmdParams
 	}