diff --git a/client/src/cli.rs b/client/src/cli.rs
index a64ab5117..e79f2db82 100644
--- a/client/src/cli.rs
+++ b/client/src/cli.rs
@@ -413,8 +413,8 @@ pub enum CliCommands {
         #[arg(long = "about-emoji")]
         about_emoji: Option<String>,
 
-        #[arg(long = "mobile-coin-address")]
-        mobile_coin_address: Option<String>,
+        #[arg(long = "mobilecoin-address")]
+        mobilecoin_address: Option<String>,
 
         #[arg(long)]
         avatar: Option<String>,
diff --git a/client/src/main.rs b/client/src/main.rs
index 35c1ab229..a8c14bb0c 100644
--- a/client/src/main.rs
+++ b/client/src/main.rs
@@ -371,7 +371,7 @@ async fn handle_command(
             family_name,
             about,
             about_emoji,
-            mobile_coin_address,
+            mobilecoin_address,
             avatar,
             remove_avatar,
         } => {
@@ -382,7 +382,7 @@ async fn handle_command(
                     family_name,
                     about,
                     about_emoji,
-                    mobile_coin_address,
+                    mobilecoin_address,
                     avatar,
                     remove_avatar,
                 )
diff --git a/man/signal-cli.1.adoc b/man/signal-cli.1.adoc
index a892a296f..b87aad84e 100644
--- a/man/signal-cli.1.adoc
+++ b/man/signal-cli.1.adoc
@@ -651,7 +651,7 @@ Path to the new avatar image file.
 *--remove-avatar*::
 Remove the avatar
 
-*--mobile-coin-address*::
+*--mobilecoin-address*::
 New MobileCoin address (Base64 encoded public address)
 
 === updateContact
diff --git a/run_tests.sh b/run_tests.sh
index 0e5ff4be0..23b426a04 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -209,7 +209,7 @@ for OUTPUT in "plain-text" "json"; do
 done
 
 ## Profile
-run_main -a "$NUMBER_1" updateProfile --given-name=GIVEN --family-name=FAMILY --about=ABOUT --about-emoji=EMOJI --avatar=LICENSE --mobile-coin-address="YWJjCg=="
+run_main -a "$NUMBER_1" updateProfile --given-name=GIVEN --family-name=FAMILY --about=ABOUT --about-emoji=EMOJI --avatar=LICENSE --mobilecoin-address="YWJjCg=="
 
 ## Provisioning
 link "$NUMBER_1"
diff --git a/src/main/java/org/asamk/signal/commands/UpdateProfileCommand.java b/src/main/java/org/asamk/signal/commands/UpdateProfileCommand.java
index cea2da0df..ec0aaf13b 100644
--- a/src/main/java/org/asamk/signal/commands/UpdateProfileCommand.java
+++ b/src/main/java/org/asamk/signal/commands/UpdateProfileCommand.java
@@ -27,7 +27,8 @@ public void attachToSubparser(final Subparser subparser) {
         subparser.addArgument("--family-name").help("New profile family name (optional)");
         subparser.addArgument("--about").help("New profile about text");
         subparser.addArgument("--about-emoji").help("New profile about emoji");
-        subparser.addArgument("--mobile-coin-address").help("New MobileCoin address (Base64 encoded public address)");
+        subparser.addArgument("--mobilecoin-address").help("New MobileCoin address (Base64 encoded public address)");
+        subparser.addArgument("--mobile-coin-address", "--mobilecoin-address") // Support legacy option name.
 
         final var avatarOptions = subparser.addMutuallyExclusiveGroup();
         avatarOptions.addArgument("--avatar").help("Path to new profile avatar");
@@ -42,7 +43,7 @@ public void handleCommand(
         var familyName = ns.getString("family-name");
         var about = ns.getString("about");
         var aboutEmoji = ns.getString("about-emoji");
-        var mobileCoinAddressString = ns.getString("mobile-coin-address");
+        var mobileCoinAddressString = ns.getString("mobilecoin-address");
         var mobileCoinAddress = mobileCoinAddressString == null
                 ? null
                 : Base64.getDecoder().decode(mobileCoinAddressString);