diff --git a/src/util/dt_impl.cpp b/src/util/dt_impl.cpp
index de40644f..09377dee 100644
--- a/src/util/dt_impl.cpp
+++ b/src/util/dt_impl.cpp
@@ -38,6 +38,10 @@
 #endif
 #define DOCTEST_CONFIG_NO_UNPREFIXED_OPTIONS
 #if !defined(DOCTEST_CONFIG_DISABLE)
+#if defined(__clang__) && defined(__FAST_MATH__) && defined(__INTEL_LLVM_COMPILER)
+// warning: comparison with NaN always evaluates to false in fast floating point modes
+#pragma clang diagnostic ignored "-Wtautological-constant-compare"
+#endif
 #include <doctest/doctest/parts/doctest.cpp>
 #endif