diff --git a/lib/aligning_guidelines.js b/lib/aligning_guidelines.js
index 68c6b3f831f..188282fbb3e 100644
--- a/lib/aligning_guidelines.js
+++ b/lib/aligning_guidelines.js
@@ -190,7 +190,9 @@ function initAligningGuidelines(canvas) {
   });
 
   canvas.on('before:render', function() {
-    canvas.clearContext(canvas.contextTop);
+    if (canvas.contextTop) {
+      canvas.clearContext(canvas.contextTop);
+    }
   });
 
   canvas.on('after:render', function() {
diff --git a/lib/centering_guidelines.js b/lib/centering_guidelines.js
index 5c6f6c8ed7e..761e781a4b4 100644
--- a/lib/centering_guidelines.js
+++ b/lib/centering_guidelines.js
@@ -68,7 +68,9 @@ function initCenteringGuidelines(canvas) {
   });
 
   canvas.on('before:render', function() {
-    canvas.clearContext(canvas.contextTop);
+    if (canvas.contextTop) {
+      canvas.clearContext(canvas.contextTop);
+    }
   });
 
   canvas.on('after:render', function() {