diff --git a/manim/mobject/svg/text_mobject.py b/manim/mobject/svg/text_mobject.py
index 0dd0981a8b..42bc791a4b 100644
--- a/manim/mobject/svg/text_mobject.py
+++ b/manim/mobject/svg/text_mobject.py
@@ -129,6 +129,11 @@ def __init__(self, text, **config):
             self.line_spacing = self.size + self.size * 0.3
         else:
             self.line_spacing = self.size + self.size * self.line_spacing
+        if self.size > 800:
+            logger.warning(
+                "Using a font size larger than 800 can lead to render problems."
+                " See https://github.com/ManimCommunity/manim/pull/476 for details."
+            )
         file_name = self.text2svg()
         self.remove_last_M(file_name)
         SVGMobject.__init__(self, file_name, **config)
@@ -318,7 +323,7 @@ def text2svg(self):
         file_name = os.path.join(dir_name, hash_name) + ".svg"
         if os.path.exists(file_name):
             return file_name
-        surface = cairo.SVGSurface(file_name, 600, 400)
+        surface = cairo.SVGSurface(file_name, 4 * len(self.text) * size, 400)
         context = cairo.Context(surface)
         context.set_font_size(size)
         context.move_to(START_X, START_Y)
@@ -684,6 +689,11 @@ def __init__(self, text: str, **config):  # pylint: disable=redefined-outer-name
             self.line_spacing = self.size + self.size * 0.3
         else:
             self.line_spacing = self.size + self.size * self.line_spacing
+        if self.size > 800:
+            logger.warning(
+                "Using a font size larger than 800 can lead to render problems."
+                " See https://github.com/ManimCommunity/manim/pull/476 for details."
+            )
         file_name = self.text2svg()
         self.remove_last_M(file_name)
         SVGMobject.__init__(self, file_name, **config)
@@ -891,7 +901,7 @@ def text2svg(self):
         file_name = os.path.join(dir_name, hash_name) + ".svg"
         if os.path.exists(file_name):
             return file_name
-        surface = cairocffi.SVGSurface(file_name, 600, 400)
+        surface = cairocffi.SVGSurface(file_name, 4 * len(self.text) * size, 400)
         context = cairocffi.Context(surface)
         context.move_to(START_X, START_Y)
         settings = self.text2settings()
diff --git a/tests/test_text.py b/tests/test_text.py
new file mode 100644
index 0000000000..ea227c58aa
--- /dev/null
+++ b/tests/test_text.py
@@ -0,0 +1,9 @@
+from manim import Text
+
+
+def test_long_string():
+    """Check that `#469 <https://github.com/ManimCommunity/manim/issues/469>`_
+    is resolved."""
+
+    t = Text("a" * 150, font="Arial")
+    assert len(t.text) == len(t.submobjects)