diff --git a/clang-tools-extra/clang-tidy/modernize/LoopConvertCheck.cpp b/clang-tools-extra/clang-tidy/modernize/LoopConvertCheck.cpp
index 2c62372..054e5ce 100644
--- a/clang-tools-extra/clang-tidy/modernize/LoopConvertCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/LoopConvertCheck.cpp
@@ -391,6 +391,12 @@
         return false;
       CType = CType->getPointeeType();
     }
+    // If VDec is a reference to a container, Dereference is false,
+    // but we still need to check the const-ness of the underlying container
+    // type.
+    if (const auto &RT = CType->getAs<ReferenceType>()) {
+      CType = RT->getPointeeType();
+    }
     return CType.isConstQualified();
   }
   return false;