diff --git a/validate/gst/validate/gst-validate-internal.h b/validate/gst/validate/gst-validate-internal.h
index 79d1c7d32f..35c9cfc316 100644
--- a/validate/gst/validate/gst-validate-internal.h
+++ b/validate/gst/validate/gst-validate-internal.h
@@ -27,17 +27,17 @@
 #include "gst-validate-monitor.h"
 #include <json-glib/json-glib.h>
 
-GST_DEBUG_CATEGORY_EXTERN (gstvalidate_debug);
+extern G_GNUC_INTERNAL GstDebugCategory *gstvalidate_debug;
 #define GST_CAT_DEFAULT gstvalidate_debug
 
-extern GRegex *newline_regex;
-extern GstClockTime _priv_start_time;
+extern G_GNUC_INTERNAL GRegex *newline_regex;
+extern G_GNUC_INTERNAL GstClockTime _priv_start_time;
 
 
 /* If an action type is 1 (TRUE) we also consider it is a config to keep backward compatibility */
 #define IS_CONFIG_ACTION_TYPE(type) (((type) & GST_VALIDATE_ACTION_TYPE_CONFIG) || ((type) == TRUE))
 
-extern GType _gst_validate_action_type_type;
+extern G_GNUC_INTERNAL GType _gst_validate_action_type_type;
 
 void init_scenarios (void);
 
diff --git a/validate/gst/validate/gst-validate-report.c b/validate/gst/validate/gst-validate-report.c
index 3106348ad3..9df52d2aa0 100644
--- a/validate/gst/validate/gst-validate-report.c
+++ b/validate/gst/validate/gst-validate-report.c
@@ -49,7 +49,7 @@ GSocketClient *socket_client = NULL;
 GSocketConnection *server_connection = NULL;
 GOutputStream *server_ostream = NULL;
 
-GType _gst_validate_report_type = 0;
+static GType _gst_validate_report_type = 0;
 
 static JsonNode *
 gst_validate_report_serialize (GstValidateReport * report)
diff --git a/validate/gst/validate/gst-validate-scenario.c b/validate/gst/validate/gst-validate-scenario.c
index 73fa0fe435..3c8abe8756 100644
--- a/validate/gst/validate/gst-validate-scenario.c
+++ b/validate/gst/validate/gst-validate-scenario.c
@@ -223,7 +223,7 @@ G_DEFINE_TYPE_WITH_CODE (GstValidateScenario, gst_validate_scenario,
         _reporter_iface_init));
 
 /* GstValidateAction implementation */
-GType _gst_validate_action_type = 0;
+static GType _gst_validate_action_type = 0;
 
 struct _GstValidateActionPrivate
 {
diff --git a/validate/win32/common/libgstvalidate.def b/validate/win32/common/libgstvalidate.def
index c47d7b0085..2d50790427 100644
--- a/validate/win32/common/libgstvalidate.def
+++ b/validate/win32/common/libgstvalidate.def
@@ -1,7 +1,4 @@
 EXPORTS
-	_gst_validate_action_type DATA
-	_gst_validate_action_type_type DATA
-	_gst_validate_report_type DATA
 	gst_validate_action_get_clocktime
 	gst_validate_action_get_scenario
 	gst_validate_action_get_type