diff --git a/test/test_img_math.rb b/test/test_img_math.rb
index 0f775dd75..8f1e49716 100644
--- a/test/test_img_math.rb
+++ b/test/test_img_math.rb
@@ -30,7 +30,7 @@ def test_defer_math_image_pathname
   end
 
   def test_defer_math_image
-    unless support_latex_in_tests?
+    unless support_latex_in_tests? && support_pdftocairo_in_tests?
       $stderr.puts 'skip test_defer_math_image'
       return true
     end
@@ -108,4 +108,13 @@ def support_latex_in_tests?
       false
     end
   end
+
+  def support_pdftocairo_in_tests?
+    begin
+      `pdftocairo -v`
+      true
+    rescue StandardError
+      false
+    end
+  end
 end