diff --git a/src/generator/generate-helpers.ts b/src/generator/generate-helpers.ts
index 33aa97ef0..9b5ba2566 100644
--- a/src/generator/generate-helpers.ts
+++ b/src/generator/generate-helpers.ts
@@ -37,10 +37,16 @@ export function generateHelpersFile(
             }
             if ("__arguments" in value) {
               return [key, Object.fromEntries(
-                value.__arguments.map((argument: object) => {
-                  const [[key, { value }]] = Object.entries(argument);
-                  return [key, value];
-                })
+                value.__arguments
+                  .map((argument: object) => {
+                    const entries = Object.entries(argument);
+                    if (!entries[0]) {
+                      return null;
+                    }
+                    const [[key, { value }]] = entries;
+                    return [key, value];
+                  })
+                  .filter((entry: unknown) => entry != null)
               )];
             }
             return [key, transformFields(value)];
diff --git a/tests/regression/__snapshots__/generate-helpers.ts.snap b/tests/regression/__snapshots__/generate-helpers.ts.snap
index 379fd875d..c33aa4c8f 100644
--- a/tests/regression/__snapshots__/generate-helpers.ts.snap
+++ b/tests/regression/__snapshots__/generate-helpers.ts.snap
@@ -26,10 +26,16 @@ function transformFields(fields: Record<string, any>): Record<string, any> {
         }
         if (\\"__arguments\\" in value) {
           return [key, Object.fromEntries(
-            value.__arguments.map((argument: object) => {
-              const [[key, { value }]] = Object.entries(argument);
-              return [key, value];
-            })
+            value.__arguments
+              .map((argument: object) => {
+                const entries = Object.entries(argument);
+                if (!entries[0]) {
+                  return null;
+                }
+                const [[key, { value }]] = entries;
+                return [key, value];
+              })
+              .filter((entry: unknown) => entry != null)
           )];
         }
         return [key, transformFields(value)];
@@ -91,10 +97,16 @@ function transformFields(fields: Record<string, any>): Record<string, any> {
         }
         if (\\"__arguments\\" in value) {
           return [key, Object.fromEntries(
-            value.__arguments.map((argument: object) => {
-              const [[key, { value }]] = Object.entries(argument);
-              return [key, value];
-            })
+            value.__arguments
+              .map((argument: object) => {
+                const entries = Object.entries(argument);
+                if (!entries[0]) {
+                  return null;
+                }
+                const [[key, { value }]] = entries;
+                return [key, value];
+              })
+              .filter((entry: unknown) => entry != null)
           )];
         }
         return [key, transformFields(value)];