diff --git a/doc/flatpak-build-bundle.xml b/doc/flatpak-build-bundle.xml
index a9a43039..07e1ceda 100644
--- a/doc/flatpak-build-bundle.xml
+++ b/doc/flatpak-build-bundle.xml
@@ -88,7 +88,8 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    The arch to create a bundle for.
+                    The arch to create a bundle for. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-build-export.xml b/doc/flatpak-build-export.xml
index 6b232f5d..80b32bb4 100644
--- a/doc/flatpak-build-export.xml
+++ b/doc/flatpak-build-export.xml
@@ -127,7 +127,9 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    Specify the architecture component of the branch to export. Only host compatible architectures can be specified.
+                    Specify the architecture component of the branch to export. Only
+                    host compatible architectures can be specified; see
+                    <command>flatpak --supported-arches</command> for valid values.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-build-init.xml b/doc/flatpak-build-init.xml
index dc477457..15bc485c 100644
--- a/doc/flatpak-build-init.xml
+++ b/doc/flatpak-build-init.xml
@@ -83,7 +83,8 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    The architecture to use.
+                    The architecture to use. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-build-sign.xml b/doc/flatpak-build-sign.xml
index f4d3ba8e..13994358 100644
--- a/doc/flatpak-build-sign.xml
+++ b/doc/flatpak-build-sign.xml
@@ -100,7 +100,8 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    The architecture to use.
+                    The architecture to use. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-info.xml b/doc/flatpak-info.xml
index 53866e95..1b3419d6 100644
--- a/doc/flatpak-info.xml
+++ b/doc/flatpak-info.xml
@@ -103,7 +103,8 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    Query for this architecture.
+                    Query for this architecture. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-install.xml b/doc/flatpak-install.xml
index 04e6cdc8..a6b8f96a 100644
--- a/doc/flatpak-install.xml
+++ b/doc/flatpak-install.xml
@@ -178,7 +178,9 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    The default architecture to install for, if not given explicitly in the <arg choice="plain">REF</arg>.
+                    The default architecture to install for, if not given explicitly in
+                    the <arg choice="plain">REF</arg>. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-list.xml b/doc/flatpak-list.xml
index 463fedc8..f9fff8a9 100644
--- a/doc/flatpak-list.xml
+++ b/doc/flatpak-list.xml
@@ -104,7 +104,8 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    List installations for this architecture.
+                    List apps/runtimes for this architecture. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-make-current.xml b/doc/flatpak-make-current.xml
index 9b6ccb86..a76d54c9 100644
--- a/doc/flatpak-make-current.xml
+++ b/doc/flatpak-make-current.xml
@@ -102,7 +102,8 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    The architecture to install for.
+                    The architecture to make current for. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-remote-info.xml b/doc/flatpak-remote-info.xml
index 4d0b7e9c..914921a4 100644
--- a/doc/flatpak-remote-info.xml
+++ b/doc/flatpak-remote-info.xml
@@ -131,7 +131,9 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    The default architecture to look for, if not given explicitly in the <arg choice="plain">REF</arg>.
+                    The default architecture to look for, if not given explicitly in
+                    the <arg choice="plain">REF</arg>. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-remote-ls.xml b/doc/flatpak-remote-ls.xml
index 05a9f212..4206b0a3 100644
--- a/doc/flatpak-remote-ls.xml
+++ b/doc/flatpak-remote-ls.xml
@@ -159,6 +159,7 @@
                 <listitem><para>
                     Show only those matching the specified architecture. By default, only
                     supported architectures are shown. Use <option>--arch=*</option> to show all architectures.
+                    See <command>flatpak --supported-arches</command> for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-run.xml b/doc/flatpak-run.xml
index 8dd65c72..900405f0 100644
--- a/doc/flatpak-run.xml
+++ b/doc/flatpak-run.xml
@@ -178,7 +178,8 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    The architecture to install for.
+                    The architecture to run. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-uninstall.xml b/doc/flatpak-uninstall.xml
index 595f4da0..121c4342 100644
--- a/doc/flatpak-uninstall.xml
+++ b/doc/flatpak-uninstall.xml
@@ -137,7 +137,8 @@
 
                 <listitem><para>
                     The architecture to uninstall, instead of the architecture of
-                    the host system.
+                    the host system. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>
 
diff --git a/doc/flatpak-update.xml b/doc/flatpak-update.xml
index 250dcfd3..d1c641ef 100644
--- a/doc/flatpak-update.xml
+++ b/doc/flatpak-update.xml
@@ -135,7 +135,8 @@
                 <term><option>--arch=ARCH</option></term>
 
                 <listitem><para>
-                    The architecture to update for.
+                    The architecture to update for. See <command>flatpak --supported-arches</command>
+                    for architectures supported by the host.
                 </para></listitem>
             </varlistentry>