diff --git a/tests/CVStabilizer_Tests.cpp b/tests/CVStabilizer_Tests.cpp
index 2ea0ff2e..401884d7 100644
--- a/tests/CVStabilizer_Tests.cpp
+++ b/tests/CVStabilizer_Tests.cpp
@@ -54,8 +54,14 @@ SUITE(CVStabilizer_Tests)
         openshot::Clip c1(path.str());
         c1.Open();
 
+        std::string json_data = R"proto(
+        {
+            "protobuf_data_path": "stabilizer.data", 
+            "smoothing-window": 30 
+        } )proto";
+        
         // Create stabilizer
-        CVStabilization stabilizer("{\"protobuf_data_path\": \"stabilizer.data\", \"smoothing-window\": 30}", processingController);
+        CVStabilization stabilizer(json_data, processingController);
 
         // Stabilize clip for frames 0-21
         stabilizer.stabilizeClip(c1, 0, 21, true);
@@ -92,8 +98,14 @@ SUITE(CVStabilizer_Tests)
         openshot::Clip c1(path.str());
         c1.Open();
 
+        std::string json_data = R"proto(
+        {
+            "protobuf_data_path": "stabilizer.data", 
+            "smoothing-window": 30
+        } )proto";
+
         // Create first stabilizer
-        CVStabilization stabilizer_1("{\"protobuf_data_path\": \"stabilizer.data\", \"smoothing-window\": 30}", processingController);
+        CVStabilization stabilizer_1(json_data, processingController);
 
         // Stabilize clip for frames 0-20
         stabilizer_1.stabilizeClip(c1, 0, 20+1, true);
@@ -106,7 +118,7 @@ SUITE(CVStabilizer_Tests)
         stabilizer_1.SaveStabilizedData();
 
         // Create second stabilizer
-        CVStabilization stabilizer_2("{\"protobuf_data_path\": \"stabilizer.data\", \"smoothing-window\": 30}", processingController);
+        CVStabilization stabilizer_2(json_data, processingController);
 
         // Load stabilized data from first stabilizer protobuf data
         stabilizer_2._LoadStabilizedData();
@@ -114,7 +126,7 @@ SUITE(CVStabilizer_Tests)
         // Get stabilized data
         TransformParam tp_2 = stabilizer_2.GetTransformParamData(20);
         CamTrajectory ct_2 = stabilizer_2.GetCamTrajectoryTrackedData(20);
-        
+
         // Compare first stabilizer data with second stabilizer data
         CHECK_EQUAL((int) (tp_1.dx * 10000), (int) (tp_2.dx *10000));
         CHECK_EQUAL((int) (tp_1.dy * 10000), (int) (tp_2.dy * 10000));
diff --git a/tests/CVTracker_Tests.cpp b/tests/CVTracker_Tests.cpp
index 3ec36b01..5e1bf709 100644
--- a/tests/CVTracker_Tests.cpp
+++ b/tests/CVTracker_Tests.cpp
@@ -54,17 +54,15 @@ SUITE(CVTracker_Tests)
         openshot::Clip c1(path.str());
         c1.Open();
 
-        std::string proto_data = R"proto(
+        std::string json_data = R"proto(
         {
-            "protobuf_data_path": "", 
+            "protobuf_data_path": "kcf_tracker.data", 
             "tracker-type": "KCF", 
             "region": {"x": 294, "y": 102, "width": 180, "height": 166, "first-frame": 0}
         } )proto";
 
         // Create tracker
-        //CVTracker kcfTracker("{\"protobuf_data_path\": \"\", \"tracker_type\": \"KCF\", \"bbox\": {\"x\": 294, \"y\": 102, \"w\": 180, \"h\": 166}, \"first_frame\": 0}", processingController);
-        CVTracker kcfTracker(proto_data, processingController);
-        
+        CVTracker kcfTracker(json_data, processingController);
         
         // Track clip for frames 0-20
         kcfTracker.trackClip(c1, 0, 20, true);
@@ -94,18 +92,16 @@ SUITE(CVTracker_Tests)
         openshot::Clip c1(path.str());
         c1.Open();
 
-        std::string proto_data = R"proto(
+        std::string json_data = R"proto(
         {
             "protobuf_data_path": "kcf_tracker.data", 
-            "tracker_type": "KCF", 
-            "bbox": {"x": 294, "y": 102, "w": 180, "h": 166},
-            "first_frame": 0
+            "tracker-type": "KCF", 
+            "region": {"x": 294, "y": 102, "width": 180, "height": 166, "first-frame": 0}
         } )proto";
 
-        // Create first tracker
-        //CVTracker kcfTracker_1("{\"protobuf_data_path\": \"kcf_tracker.data\", \"tracker_type\": \"KCF\", \"bbox\": {\"x\": 294, \"y\": 102, \"w\": 180, \"h\": 166}, \"first_frame\": 0}", processingController);
-        CVTracker kcfTracker_1(proto_data, processingController);
 
+        // Create first tracker
+        CVTracker kcfTracker_1(json_data, processingController);
 
         // Track clip for frames 0-20
         kcfTracker_1.trackClip(c1, 0, 20, true);
@@ -125,15 +121,12 @@ SUITE(CVTracker_Tests)
         {
             "protobuf_data_path": "kcf_tracker.data", 
             "tracker_type": "", 
-            "bbox": {"x": -1, "y": -1, "w": -1, "h": -1},
-            "first_frame": 0
+            "region": {"x": -1, "y": -1, "width": -1, "height": -1, "first-frame": 0}
         } )proto";
 
         // Create second tracker
-        //CVTracker kcfTracker_2("{\"protobuf_data_path\": \"kcf_tracker.data\", \"tracker_type\": \"\", \"bbox\": {\"x\": -1, \"y\": -1, \"w\": -1, \"h\": -1}, \"first_frame\": 0}", processingController);
         CVTracker kcfTracker_2(proto_data_1, processingController);
 
-
         // Load tracked data from first tracker protobuf data
         kcfTracker_2._LoadTrackedData();