diff --git a/fpdfsdk/fpdf_doc.cpp b/fpdfsdk/fpdf_doc.cpp
index ab8fc03..8bbb761 100644
--- a/fpdfsdk/fpdf_doc.cpp
+++ b/fpdfsdk/fpdf_doc.cpp
@@ -228,6 +228,12 @@
 
   CPDF_Action cAction(CPDFDictionaryFromFPDFAction(action));
   ByteString path = cAction.GetURI(pDoc);
+
+  // Table 206 in the ISO 32000-1:2008 spec states the type for the URI field is
+  // ASCII string. If the data is not 7-bit ASCII, consider that a failure.
+  if (!path.AsStringView().IsASCII())
+    return 0;
+
   const unsigned long len =
       pdfium::base::checked_cast<unsigned long>(path.GetLength() + 1);
   if (buffer && len <= buflen)
diff --git a/fpdfsdk/fpdf_doc_embeddertest.cpp b/fpdfsdk/fpdf_doc_embeddertest.cpp
index d934684..843f65b 100644
--- a/fpdfsdk/fpdf_doc_embeddertest.cpp
+++ b/fpdfsdk/fpdf_doc_embeddertest.cpp
@@ -355,18 +355,8 @@
   EXPECT_EQ(static_cast<unsigned long>(PDFACTION_URI),
             FPDFAction_GetType(action));
 
-  // TODO(crbug.com/1323491): FPDFAction_GetURIPath() claims it only returns
-  // 7-bit ASCII values.
-  const char kExpectedResult[] =
-      "https://example.com/\xA5octal\xC7"
-      "chars";
-  const unsigned long kExpectedLength = sizeof(kExpectedResult);
-  unsigned long bufsize = FPDFAction_GetURIPath(document(), action, nullptr, 0);
-  ASSERT_EQ(kExpectedLength, bufsize);
-
-  char buf[1024];
-  EXPECT_EQ(bufsize, FPDFAction_GetURIPath(document(), action, buf, bufsize));
-  EXPECT_STREQ(kExpectedResult, buf);
+  // Call fails because the URI embedded in the PDF is invalid.
+  EXPECT_EQ(0u, FPDFAction_GetURIPath(document(), action, nullptr, 0));
 
   UnloadPage(page);
 }