diff --git a/atdna/main.cpp b/atdna/main.cpp
index 88f8a8e..7f56d46 100644
--- a/atdna/main.cpp
+++ b/atdna/main.cpp
@@ -86,7 +86,7 @@ static inline bool GetIntegerConstantExpr(const clang::Expr* expr, llvm::APSInt&
 }
 #else
 static inline bool GetIntegerConstantExpr(const clang::Expr* expr, llvm::APSInt& out, const clang::ASTContext& ctx) {
-  return expr->isIntegerConstantExpr(out, context);
+  return expr->isIntegerConstantExpr(out, ctx);
 }
 #endif