diff --git a/clang/utils/TableGen/ClangSACheckersEmitter.cpp b/clang/utils/TableGen/ClangSACheckersEmitter.cpp
--- a/clang/utils/TableGen/ClangSACheckersEmitter.cpp
+++ b/clang/utils/TableGen/ClangSACheckersEmitter.cpp
@@ -76,14 +76,17 @@
 
 static std::string getCheckerDocs(const Record &R) {
   StringRef LandingPage;
-  if (BitsInit *BI = R.getValueAsBitsInit("Documentation")) {
-    uint64_t V = getValueFromBitsInit(BI, R);
-    if (V == 1)
-      LandingPage = "available_checks.html";
-    else if (V == 2)
-      LandingPage = "alpha_checks.html";
-  }
-  
+  const BitsInit *BI = R.getValueAsBitsInit("Documentation");
+  if (!BI)
+    PrintFatalError(R.getLoc(),
+                    "missing Documentation for " + getCheckerFullName(&R));
+
+  uint64_t V = getValueFromBitsInit(BI, R);
+  if (V == 1)
+    LandingPage = "available_checks.html";
+  else if (V == 2)
+    LandingPage = "alpha_checks.html";
+
   if (LandingPage.empty())
     return "";