diff --git a/cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/SsaInternalsCommon.qll b/cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/SsaInternalsCommon.qll
index b38f43d1a52..486b1ad716e 100644
--- a/cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/SsaInternalsCommon.qll
+++ b/cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/SsaInternalsCommon.qll
@@ -412,7 +412,7 @@ private predicate isModifiableAtImpl(CppType cppType, int indirectionIndex) {
       not base.isConst()
       or
       // but in the case of a class type, it may be the case that
-      // one of the members were modified.
+      // one of the members was modified.
       exists(base.stripType().(Cpp::Class).getAField())
     )
     or