diff --git a/Cargo.lock b/Cargo.lock
index c88dbd7..76aec36 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -161,7 +161,7 @@ dependencies = [
 
 [[package]]
 name = "krunvm"
-version = "0.2.1"
+version = "0.2.2"
 dependencies = [
  "clap",
  "confy",
diff --git a/Cargo.toml b/Cargo.toml
index f82c203..6d0765b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "krunvm"
-version = "0.2.1"
+version = "0.2.2"
 authors = ["Sergio Lopez <slp@redhat.com>"]
 description = "Create microVMs from OCI images"
 repository = "https://github.com/containers/krunvm"
diff --git a/src/main.rs b/src/main.rs
index fc718c0..58d0428 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -195,7 +195,8 @@ fn main() {
                         .short("v")
                         .help("Volume in form \"host_path:guest_path\" to be exposed to the guest")
                         .takes_value(true)
-                        .multiple(true),
+                        .multiple(true)
+                        .number_of_values(1),
                 )
                 .arg(
                     Arg::with_name("remove-ports")
@@ -208,7 +209,8 @@ fn main() {
                         .short("p")
                         .help("Port in format \"host_port:guest_port\" to be exposed to the host")
                         .takes_value(true)
-                        .multiple(true),
+                        .multiple(true)
+                        .number_of_values(1),
                 )
                 .arg(
                     Arg::with_name("new-name")
@@ -279,7 +281,8 @@ fn main() {
                         .short("v")
                         .help("Volume in form \"host_path:guest_path\" to be exposed to the guest")
                         .takes_value(true)
-                        .multiple(true),
+                        .multiple(true)
+                        .number_of_values(1),
                 )
                 .arg(
                     Arg::with_name("port")
@@ -287,7 +290,8 @@ fn main() {
                         .short("p")
                         .help("Port in format \"host_port:guest_port\" to be exposed to the host")
                         .takes_value(true)
-                        .multiple(true),
+                        .multiple(true)
+                        .number_of_values(1),
                 )
                 .arg(
                     Arg::with_name("name")