diff --git a/.changeset/thirty-birds-look.md b/.changeset/thirty-birds-look.md
new file mode 100644
index 00000000..e24136ee
--- /dev/null
+++ b/.changeset/thirty-birds-look.md
@@ -0,0 +1,5 @@
+---
+"@delvtech/evm-client": patch
+---
+
+Fix handling of single params
diff --git a/packages/evm-client/src/contract/utils/friendlyToArray.ts b/packages/evm-client/src/contract/utils/friendlyToArray.ts
index c304db8a..efc2db71 100644
--- a/packages/evm-client/src/contract/utils/friendlyToArray.ts
+++ b/packages/evm-client/src/contract/utils/friendlyToArray.ts
@@ -81,6 +81,11 @@ export function friendlyToArray<
     return [] as AbiArrayType<TAbi, TItemType, TName, TParameterKind>;
   }
 
+  // Single parameters
+  if (parameters.length === 1) {
+    return [value] as AbiArrayType<TAbi, TItemType, TName, TParameterKind>;
+  }
+
   const valueObject: Record<string, unknown> =
     !!value && typeof value === 'object' ? value : {};