diff --git a/simde/arm/neon/sm3.h b/simde/arm/neon/sm3.h
index 64f02c9d8..67f8b1446 100644
--- a/simde/arm/neon/sm3.h
+++ b/simde/arm/neon/sm3.h
@@ -31,6 +31,10 @@
 
 HEDLEY_DIAGNOSTIC_PUSH
 SIMDE_DISABLE_UNWANTED_DIAGNOSTICS
+#if HEDLEY_GCC_VERSION_CHECK(14,0,0)
+  SIMDE_DIAGNOSTIC_DISABLE_MAYBE_UNINITIAZILED_
+#endif
+
 SIMDE_BEGIN_DECLS_
 
 #define ROR32(operand, shift) (((operand) >> (shift)) | ((operand) << (32-shift)))