diff --git a/src/main/java/ru/ulstu/datamodel/ChartForm.java b/src/main/java/ru/ulstu/datamodel/ChartForm.java
index 11956d4..020bbe8 100644
--- a/src/main/java/ru/ulstu/datamodel/ChartForm.java
+++ b/src/main/java/ru/ulstu/datamodel/ChartForm.java
@@ -5,7 +5,7 @@ import ru.ulstu.db.model.TimeSeriesSet;
 
 public class ChartForm {
     private TimeSeriesSet set;
-    private TimeSeriesMeta timeSeriesMeta;
+    private TimeSeriesMeta timeSeriesMeta = null;
     private String methodClassName = null;
 
     private boolean needForecast;
diff --git a/src/main/resources/templates/index.html b/src/main/resources/templates/index.html
index ce192a0..dba30b4 100644
--- a/src/main/resources/templates/index.html
+++ b/src/main/resources/templates/index.html
@@ -124,7 +124,8 @@
                     $('#select-ts').selectpicker('refresh');
                 </script>
                 <input id="need-forecast" type="hidden" th:field="*{needForecast}">
-                <button type="button" class="btn btn-primary" onclick="$('#need-forecast').val(true); form.submit();">
+                <button th:if="*{timeSeriesMeta != null && !#strings.isEmpty(timeSeriesMeta.key)}" type="button"
+                        class="btn btn-primary" onclick="$('#need-forecast').val(true); form.submit();">
                     Построить прогноз
                 </button>
                 <h5 th:if="${forecastDescription != null && forecastDescription.timeSeriesMethod != null}">
diff --git a/src/main/resources/templates/method.html b/src/main/resources/templates/method.html
index 244bc9a..650f890 100644
--- a/src/main/resources/templates/method.html
+++ b/src/main/resources/templates/method.html
@@ -145,11 +145,11 @@
                 <script th:inline="javascript" th:if="*{methodClassName != null && methodClassName != ''}">
                     $('#select-method').val([[*{methodClassName}]]);
                     $('#select-method').selectpicker('refresh');
-
-
                 </script>
+
                 <input id="need-forecast" type="hidden" th:field="*{needForecast}">
-                <button type="button" class="btn btn-primary" onclick="$('#need-forecast').val(true); form.submit();">
+                <button th:if="*{methodClassName != null && methodClassName != ''}" type="button"
+                        class="btn btn-primary" onclick="$('#need-forecast').val(true); form.submit();">
                     Построить прогноз
                 </button>
                 <div th:if="${forecastDescription != null && forecastDescription.timeSeriesMethod != null}">