diff --git a/cpp/sum.cpp b/cpp/sum.cpp
index 3bc1b74..7080e8d 100644
--- a/cpp/sum.cpp
+++ b/cpp/sum.cpp
@@ -256,16 +256,16 @@ typedef struct
   MINUTIA item[3];
 } MINUTIAE;
 
-extern "C" MINUTIAE *printAndReturnMinutiae(MINUTIAE minutiae)
+extern "C" MINUTIAE *printAndReturnMinutiae(MINUTIAE *minutiae)
 {
 
   MINUTIAE *result = new MINUTIAE;
-  result->nNumber = minutiae.nNumber;
-  printf("nNumber=%d\n", minutiae.nNumber);
+  result->nNumber = minutiae->nNumber;
+  printf("nNumber=%d\n", minutiae->nNumber);
 
   for (int i = 0; i < result->nNumber; i++)
   {
-    result->item[i] = minutiae.item[i];
+    result->item[i] = minutiae->item[i];
     printf("Result item[%d]: x=%d, y=%d, dir=%d, kind=%d\n",
            i, result->item[i].x, result->item[i].y,
            result->item[i].dir, (int)result->item[i].kind);
diff --git a/tests/struct.ts b/tests/struct.ts
index 0dc0c77..004c0c0 100644
--- a/tests/struct.ts
+++ b/tests/struct.ts
@@ -91,7 +91,7 @@ export const testObject = () => {
           ffiTypeTag: DataType.StackStruct
         },
         length: 3
-      })
+      }),
     },
     paramsType: [{
       nNumber: DataType.I16,
@@ -107,7 +107,6 @@ export const testObject = () => {
         },
         length: 3
       }),
-      ffiTypeTag: DataType.StackStruct
     }],
     paramsValue: [{
       nNumber: 3,