diff --git a/Src/Base/Parser/amrex_parser.lex.cpp b/Src/Base/Parser/amrex_parser.lex.cpp
index fffa52a4212..5d169da2f33 100644
--- a/Src/Base/Parser/amrex_parser.lex.cpp
+++ b/Src/Base/Parser/amrex_parser.lex.cpp
@@ -4,6 +4,7 @@
 #pragma GCC diagnostic ignored "-Wfloat-conversion"
 #pragma GCC diagnostic ignored "-Wsign-compare"
 #elif defined(__clang__)
+#pragma clang diagnostic ignored "-Wnull-conversion"
 #pragma clang diagnostic ignored "-Wnull-dereference"
 #pragma clang diagnostic ignored "-Wunreachable-code"
 #pragma clang diagnostic ignored "-Wfloat-conversion"