diff --git a/src/tool_operate.c b/src/tool_operate.c
index fe7b65200..5401955af 100644
--- a/src/tool_operate.c
+++ b/src/tool_operate.c
@@ -864,7 +864,7 @@ static CURLcode operate_do(struct GlobalConfig *global,
 
         /* where to store */
         my_setopt(curl, CURLOPT_WRITEDATA, &outs);
-
+        my_setopt(curl, CURLOPT_INTERLEAVEDATA, &outs);
         if(metalink || !config->use_metalink)
           /* what call to write */
           my_setopt(curl, CURLOPT_WRITEFUNCTION, tool_write_cb);
diff --git a/tests/data/test1400 b/tests/data/test1400
index e8090f552..0cef18dfd 100644
--- a/tests/data/test1400
+++ b/tests/data/test1400
@@ -81,6 +81,7 @@ int main(int argc, char *argv[])
      them yourself.
 
   CURLOPT_WRITEDATA set to a objectpointer
+  CURLOPT_INTERLEAVEDATA set to a objectpointer
   CURLOPT_WRITEFUNCTION set to a functionpointer
   CURLOPT_READDATA set to a objectpointer
   CURLOPT_READFUNCTION set to a functionpointer
diff --git a/tests/data/test1401 b/tests/data/test1401
index 02705df2e..de4d0aa4f 100644
--- a/tests/data/test1401
+++ b/tests/data/test1401
@@ -100,6 +100,7 @@ int main(int argc, char *argv[])
      them yourself.
 
   CURLOPT_WRITEDATA set to a objectpointer
+  CURLOPT_INTERLEAVEDATA set to a objectpointer
   CURLOPT_WRITEFUNCTION set to a functionpointer
   CURLOPT_READDATA set to a objectpointer
   CURLOPT_READFUNCTION set to a functionpointer
diff --git a/tests/data/test1402 b/tests/data/test1402
index 9c4f47342..d2b05f562 100644
--- a/tests/data/test1402
+++ b/tests/data/test1402
@@ -88,6 +88,7 @@ int main(int argc, char *argv[])
      them yourself.
 
   CURLOPT_WRITEDATA set to a objectpointer
+  CURLOPT_INTERLEAVEDATA set to a objectpointer
   CURLOPT_WRITEFUNCTION set to a functionpointer
   CURLOPT_READDATA set to a objectpointer
   CURLOPT_READFUNCTION set to a functionpointer
diff --git a/tests/data/test1403 b/tests/data/test1403
index c7b8896a8..b08728314 100644
--- a/tests/data/test1403
+++ b/tests/data/test1403
@@ -83,6 +83,7 @@ int main(int argc, char *argv[])
      them yourself.
 
   CURLOPT_WRITEDATA set to a objectpointer
+  CURLOPT_INTERLEAVEDATA set to a objectpointer
   CURLOPT_WRITEFUNCTION set to a functionpointer
   CURLOPT_READDATA set to a objectpointer
   CURLOPT_READFUNCTION set to a functionpointer
diff --git a/tests/data/test1404 b/tests/data/test1404
index 6d81441aa..53ab37b49 100644
--- a/tests/data/test1404
+++ b/tests/data/test1404
@@ -152,6 +152,7 @@ int main(int argc, char *argv[])
      them yourself.
 
   CURLOPT_WRITEDATA set to a objectpointer
+  CURLOPT_INTERLEAVEDATA set to a objectpointer
   CURLOPT_WRITEFUNCTION set to a functionpointer
   CURLOPT_READDATA set to a objectpointer
   CURLOPT_READFUNCTION set to a functionpointer
diff --git a/tests/data/test1405 b/tests/data/test1405
index 34b165e73..f3ad3e795 100644
--- a/tests/data/test1405
+++ b/tests/data/test1405
@@ -97,6 +97,7 @@ int main(int argc, char *argv[])
      them yourself.
 
   CURLOPT_WRITEDATA set to a objectpointer
+  CURLOPT_INTERLEAVEDATA set to a objectpointer
   CURLOPT_WRITEFUNCTION set to a functionpointer
   CURLOPT_READDATA set to a objectpointer
   CURLOPT_READFUNCTION set to a functionpointer
diff --git a/tests/data/test1406 b/tests/data/test1406
index 738870ba9..033957f60 100644
--- a/tests/data/test1406
+++ b/tests/data/test1406
@@ -90,6 +90,7 @@ int main(int argc, char *argv[])
      them yourself.
 
   CURLOPT_WRITEDATA set to a objectpointer
+  CURLOPT_INTERLEAVEDATA set to a objectpointer
   CURLOPT_WRITEFUNCTION set to a functionpointer
   CURLOPT_READDATA set to a objectpointer
   CURLOPT_READFUNCTION set to a functionpointer
diff --git a/tests/data/test1407 b/tests/data/test1407
index a8cc18e6c..5a3de1b17 100644
--- a/tests/data/test1407
+++ b/tests/data/test1407
@@ -70,6 +70,7 @@ int main(int argc, char *argv[])
      them yourself.
 
   CURLOPT_WRITEDATA set to a objectpointer
+  CURLOPT_INTERLEAVEDATA set to a objectpointer
   CURLOPT_WRITEFUNCTION set to a functionpointer
   CURLOPT_READDATA set to a objectpointer
   CURLOPT_READFUNCTION set to a functionpointer
diff --git a/tests/data/test1420 b/tests/data/test1420
index 69337e770..38139e0b0 100644
--- a/tests/data/test1420
+++ b/tests/data/test1420
@@ -75,6 +75,7 @@ int main(int argc, char *argv[])
      them yourself.
 
   CURLOPT_WRITEDATA set to a objectpointer
+  CURLOPT_INTERLEAVEDATA set to a objectpointer
   CURLOPT_WRITEFUNCTION set to a functionpointer
   CURLOPT_READDATA set to a objectpointer
   CURLOPT_READFUNCTION set to a functionpointer