diff --git a/src/dialogs.c b/src/dialogs.c
index a42040be..02598444 100644
--- a/src/dialogs.c
+++ b/src/dialogs.c
@@ -31,6 +31,8 @@
  * Boston, MA 02110-1301, USA.
  */
 
+#include <sys/syscall.h>
+
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>
 
@@ -72,6 +74,18 @@ void oregano_error_with_title (gchar *title, gchar *msg)
 {
 	GtkWidget *dialog;
 	GString *span_msg;
+	pid_t tid = 0;
+
+#ifdef SYS_gettid
+	tid = syscall(SYS_gettid);
+#endif
+	// make sure that this is running in the main thread
+	if (tid && (getpid() != tid)) {
+		OreganoTitleMsg *tm = g_malloc (sizeof (OreganoTitleMsg));
+		tm->title = title;
+		tm->msg = msg;
+		g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, (GSourceFunc) oregano_schedule_error_with_title, tm, NULL);
+	}
 
 	span_msg = g_string_new ("<span weight=\"bold\" size=\"large\">");
 	span_msg = g_string_append (span_msg, title);
@@ -129,6 +143,19 @@ void oregano_warning_with_title (gchar *title, gchar *msg)
 {
 	GtkWidget *dialog;
 	GString *span_msg;
+	pid_t tid = 0;
+
+#ifdef SYS_gettid
+	tid = syscall(SYS_gettid);
+#endif
+	// make sure that this is running in the main thread
+	if (tid && (getpid() != tid)) {
+		OreganoTitleMsg *tm = g_malloc (sizeof (OreganoTitleMsg));
+		tm->title = title;
+		tm->msg = msg;
+		g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, (GSourceFunc) oregano_schedule_warning_with_title, tm, NULL);
+		return;
+	}
 
 	span_msg = g_string_new ("<span weight=\"bold\" size=\"large\">");
 	span_msg = g_string_append (span_msg, title);
diff --git a/src/engines/ngspice-analysis.c b/src/engines/ngspice-analysis.c
index 7fbe83d7..e9d527b3 100644
--- a/src/engines/ngspice-analysis.c
+++ b/src/engines/ngspice-analysis.c
@@ -873,7 +873,7 @@ static ThreadPipe *parse_noise_analysis (NgspiceAnalysisResources *resources)
 	tm->title = g_strdup ("Integrated Noise (V<sup>2</sup> or A<sup>2</sup>)");
 	tm->msg = g_strdup_printf ("Input: %f\nOutput: %f\n", inoise, onoise);
 
-	g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, (GSourceFunc) oregano_schedule_warning_with_title, tm, NULL);
+	oregano_warning_with_title (tm->title, tm->msg);
 
 	*analysis = g_list_append (*analysis, sdata);
 	(*num_analysis)++;
@@ -1014,7 +1014,7 @@ void ngspice_analysis (NgspiceAnalysisResources *resources)
 		NG_DEBUG ("%d buf = %s", i, *buf);
 
 		if (!get_analysis_type(*buf, &analysis_type) && !noise_enabled && i == 0) {
-			g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, (GSourceFunc) oregano_schedule_warning, "No analysis found", NULL);
+			oregano_warning ("No analysis found");
 			break;
 		}
 
@@ -1042,7 +1042,7 @@ void ngspice_analysis (NgspiceAnalysisResources *resources)
 			ac_enabled = FALSE;
 			break;
 		default:
-			g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, (GSourceFunc) oregano_schedule_warning, "Unexpected analysis found", NULL);
+			oregano_warning ("Unexpected analysis found");
 			unexpected_analysis_found = TRUE;
 			break;
 		}