diff --git a/src/checker.cpp b/src/checker.cpp
index 917340a20..4d7514d0b 100644
--- a/src/checker.cpp
+++ b/src/checker.cpp
@@ -1085,7 +1085,7 @@ gb_internal void init_universal(void) {
 
 	add_global_constant("ODIN_COMPILE_TIMESTAMP", t_untyped_integer, exact_value_i64(odin_compile_timestamp()));
 
-	add_global_bool_constant("__ODIN_LLVM_F16_SUPPORTED", lb_use_new_pass_system());
+	add_global_bool_constant("__ODIN_LLVM_F16_SUPPORTED", lb_use_new_pass_system() && !is_arch_wasm());
 
 	{
 		GlobalEnumValue values[3] = {