diff --git a/.changeset/silly-days-hunt.md b/.changeset/silly-days-hunt.md
new file mode 100644
index 00000000..8e52f90a
--- /dev/null
+++ b/.changeset/silly-days-hunt.md
@@ -0,0 +1,5 @@
+---
+'@reservoir0x/relay-kit-ui': patch
+---
+
+Fix undefined placeholder in custom address model when toChain is undefined
diff --git a/packages/ui/src/components/common/CustomAddressModal.tsx b/packages/ui/src/components/common/CustomAddressModal.tsx
index b2f64ff9..d2b5f2ff 100644
--- a/packages/ui/src/components/common/CustomAddressModal.tsx
+++ b/packages/ui/src/components/common/CustomAddressModal.tsx
@@ -138,9 +138,11 @@ export const CustomAddressModal: FC<Props> = ({
                 height: 48
               }}
               placeholder={
-                toChain?.vmType === 'evm'
+                !toChain
+                  ? 'Enter address'
+                  : toChain.vmType === 'evm'
                   ? 'Address or ENS'
-                  : `Enter ${toChain?.displayName} address`
+                  : `Enter ${toChain.displayName} address`
               }
               value={input}
               onChange={(e) => {